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Essay on Solar System

We see the sun every day shining in the sky and at night, we see the moon. Many other heavy bodies like satellites, meteoroids, and asteroids not visible to our naked eyes also make up the solar system. The sun and its planets together form the Solar System. The existence of the Solar System is about 4.6 billion years old.

100 Words Essay on The Solar System

200 words essay on the solar system, 500 words essay on the solar system.

Essay on Solar System

The solar system comprises all the planets that revolve around the sun. The solar system also contains moons, asteroids, comets, minor planets, and different types of gases and dust.

The planets are categorised into two categories: internal planets and outer planets. Mercury, Venus, Earth, Mars, Jupyter, Saturn, Uranus, and Neptune are called inner planets . Earlier, there were nine planets considered till 2006, but now, Pluto does not lie in the list of planets, it does not meet the standard set for the planets.

It is now termed a dwarf planet. In our solar system, the earth is the only planet where life exists. There are many solar systems that exist in the universe, it is more than 500. Our solar system includes the Kuiper belt that lies past Neptune’s orbit.

The Sun is a star that is made up of massive hot gas that gives us heat and light . The Sun is the focal point of the solar system, every substance in the solar system revolves around the Sun. There are eight planets in the solar system, Mercury is the closest planet to the Sun and the smallest planet in the solar system whereas Neptune is the farthest one and Jupiter is the biggest planet in the solar system.

Only Earth has a supportive environment for living creatures. The Earth rotates around its own axis and revolves around the Sun, similarly the moon orbits around the Earth. For complete rotation the earth takes one day and for completing one cycle around the sun it takes 365 days. It is what we call one year and due to gravity we all are stuck to the surface of the Earth.

A Comet is a large body in space made of rocks, ice, and frozen gas. The centre of a comet is called the nucleus. Asteroids are also large bodies in space made of rocks and minerals, they mostly orbit the sun between Mars and Jupiter in an area called the Asteroid Belt.

The solar system comprises eight planets, about 170 natural planetary satellites, and uncountable asteroids, meteorites, and comets. The solar system is situated within the Orion-Cygnus arm of the Milky way galaxy . Alpha Centauri made up of the stars Proxima Centauri, Alpha Centauri A, and Alpha Centauri B are the closest star systems to the solar system. The sun which is located at the centre of the solar system affects the motion of the body through its gravitational force. It contains more than 99% mass of the system.

Planets and Their Moons

Mercury | Mercury is the closest and smallest plate in the solar system, it orbits around the Sun and takes 87.97 earth days, it spins around slowly compared to Earth and it is slightly bigger than earth. It has a solid surface that is covered with craters and has a thin surface.

Venus | Venus is the second closest planet to the Sun. Venus is very similar to the earth in shape and densityVenus is the hottest planet in the solar system, it has a thick and toxic atmosphere covered with carbon dioxide and sulfuric acid in the form of yellowish clouds, and trapped heat.

Earth | Earth is the only planet that has a livable environment that sustains life and the ecosystem. It is the third closest and fifth largest planet in the solar system. On earth, life is possible for various reasons, but the most essential thing is the availability of water and the presence of oxygen. Earth is also known as the ‘Blue Planet’ because 71% of the earth’s surface is covered with seas, oceans, and large rivers of water

Mars | Mars is the fourth planet from the sun in the solar system. It appears as a red, orange, and radish ball because of the presence of iron oxide which is why Mars is also known as the ‘Red Planet’. Mars is positioned just next to the Earth. The evidence of water and oxygen raised hopes about the possibility of life on Mars.

Jupiter | Jupiter is the largest planet in the solar system and the first of the four gas giants. It is the fifth planet from the Sun. Jupiter also has a ring system like all the large gas planets, although these rings are not famous or as visible as Saturn’s ring.

Saturn | Saturn is the second largest and least dense planet in the solar system. Saturn can float in water because Saturn is made of gases, it's a gas giant with an average radius of about nine and a half times that of earth. Saturn has rings that are made of gas and dust.

Uranus | Uranus is the coldest planet in the solar system, it revolves around the sun and takes 84 earth years to complete one rotation around the earth. Uranus is called an ‘Ice Giant’ planet because it is covered with ice and Hydrogen gas.

Neptune | Neptune is the eighth planet and farthest planet from the sun in the solar system, its atmosphere is made of hydrogen, helium, and methane gas. Neptune is a dark, cold, and very windy planet in the solar system.

Explore Career Options (By Industry)

  • Construction
  • Entertainment
  • Manufacturing
  • Information Technology

Data Administrator

Database professionals use software to store and organise data such as financial information, and customer shipping records. Individuals who opt for a career as data administrators ensure that data is available for users and secured from unauthorised sales. DB administrators may work in various types of industries. It may involve computer systems design, service firms, insurance companies, banks and hospitals.

Bio Medical Engineer

The field of biomedical engineering opens up a universe of expert chances. An Individual in the biomedical engineering career path work in the field of engineering as well as medicine, in order to find out solutions to common problems of the two fields. The biomedical engineering job opportunities are to collaborate with doctors and researchers to develop medical systems, equipment, or devices that can solve clinical problems. Here we will be discussing jobs after biomedical engineering, how to get a job in biomedical engineering, biomedical engineering scope, and salary. 

Ethical Hacker

A career as ethical hacker involves various challenges and provides lucrative opportunities in the digital era where every giant business and startup owns its cyberspace on the world wide web. Individuals in the ethical hacker career path try to find the vulnerabilities in the cyber system to get its authority. If he or she succeeds in it then he or she gets its illegal authority. Individuals in the ethical hacker career path then steal information or delete the file that could affect the business, functioning, or services of the organization.

GIS officer work on various GIS software to conduct a study and gather spatial and non-spatial information. GIS experts update the GIS data and maintain it. The databases include aerial or satellite imagery, latitudinal and longitudinal coordinates, and manually digitized images of maps. In a career as GIS expert, one is responsible for creating online and mobile maps.

Data Analyst

The invention of the database has given fresh breath to the people involved in the data analytics career path. Analysis refers to splitting up a whole into its individual components for individual analysis. Data analysis is a method through which raw data are processed and transformed into information that would be beneficial for user strategic thinking.

Data are collected and examined to respond to questions, evaluate hypotheses or contradict theories. It is a tool for analyzing, transforming, modeling, and arranging data with useful knowledge, to assist in decision-making and methods, encompassing various strategies, and is used in different fields of business, research, and social science.

Geothermal Engineer

Individuals who opt for a career as geothermal engineers are the professionals involved in the processing of geothermal energy. The responsibilities of geothermal engineers may vary depending on the workplace location. Those who work in fields design facilities to process and distribute geothermal energy. They oversee the functioning of machinery used in the field.

Database Architect

If you are intrigued by the programming world and are interested in developing communications networks then a career as database architect may be a good option for you. Data architect roles and responsibilities include building design models for data communication networks. Wide Area Networks (WANs), local area networks (LANs), and intranets are included in the database networks. It is expected that database architects will have in-depth knowledge of a company's business to develop a network to fulfil the requirements of the organisation. Stay tuned as we look at the larger picture and give you more information on what is db architecture, why you should pursue database architecture, what to expect from such a degree and what your job opportunities will be after graduation. Here, we will be discussing how to become a data architect. Students can visit NIT Trichy , IIT Kharagpur , JMI New Delhi . 

Remote Sensing Technician

Individuals who opt for a career as a remote sensing technician possess unique personalities. Remote sensing analysts seem to be rational human beings, they are strong, independent, persistent, sincere, realistic and resourceful. Some of them are analytical as well, which means they are intelligent, introspective and inquisitive. 

Remote sensing scientists use remote sensing technology to support scientists in fields such as community planning, flight planning or the management of natural resources. Analysing data collected from aircraft, satellites or ground-based platforms using statistical analysis software, image analysis software or Geographic Information Systems (GIS) is a significant part of their work. Do you want to learn how to become remote sensing technician? There's no need to be concerned; we've devised a simple remote sensing technician career path for you. Scroll through the pages and read.

Budget Analyst

Budget analysis, in a nutshell, entails thoroughly analyzing the details of a financial budget. The budget analysis aims to better understand and manage revenue. Budget analysts assist in the achievement of financial targets, the preservation of profitability, and the pursuit of long-term growth for a business. Budget analysts generally have a bachelor's degree in accounting, finance, economics, or a closely related field. Knowledge of Financial Management is of prime importance in this career.

Underwriter

An underwriter is a person who assesses and evaluates the risk of insurance in his or her field like mortgage, loan, health policy, investment, and so on and so forth. The underwriter career path does involve risks as analysing the risks means finding out if there is a way for the insurance underwriter jobs to recover the money from its clients. If the risk turns out to be too much for the company then in the future it is an underwriter who will be held accountable for it. Therefore, one must carry out his or her job with a lot of attention and diligence.

Finance Executive

Product manager.

A Product Manager is a professional responsible for product planning and marketing. He or she manages the product throughout the Product Life Cycle, gathering and prioritising the product. A product manager job description includes defining the product vision and working closely with team members of other departments to deliver winning products.  

Operations Manager

Individuals in the operations manager jobs are responsible for ensuring the efficiency of each department to acquire its optimal goal. They plan the use of resources and distribution of materials. The operations manager's job description includes managing budgets, negotiating contracts, and performing administrative tasks.

Stock Analyst

Individuals who opt for a career as a stock analyst examine the company's investments makes decisions and keep track of financial securities. The nature of such investments will differ from one business to the next. Individuals in the stock analyst career use data mining to forecast a company's profits and revenues, advise clients on whether to buy or sell, participate in seminars, and discussing financial matters with executives and evaluate annual reports.

A Researcher is a professional who is responsible for collecting data and information by reviewing the literature and conducting experiments and surveys. He or she uses various methodological processes to provide accurate data and information that is utilised by academicians and other industry professionals. Here, we will discuss what is a researcher, the researcher's salary, types of researchers.

Welding Engineer

Welding Engineer Job Description: A Welding Engineer work involves managing welding projects and supervising welding teams. He or she is responsible for reviewing welding procedures, processes and documentation. A career as Welding Engineer involves conducting failure analyses and causes on welding issues. 

Transportation Planner

A career as Transportation Planner requires technical application of science and technology in engineering, particularly the concepts, equipment and technologies involved in the production of products and services. In fields like land use, infrastructure review, ecological standards and street design, he or she considers issues of health, environment and performance. A Transportation Planner assigns resources for implementing and designing programmes. He or she is responsible for assessing needs, preparing plans and forecasts and compliance with regulations.

Environmental Engineer

Individuals who opt for a career as an environmental engineer are construction professionals who utilise the skills and knowledge of biology, soil science, chemistry and the concept of engineering to design and develop projects that serve as solutions to various environmental problems. 

Safety Manager

A Safety Manager is a professional responsible for employee’s safety at work. He or she plans, implements and oversees the company’s employee safety. A Safety Manager ensures compliance and adherence to Occupational Health and Safety (OHS) guidelines.

Conservation Architect

A Conservation Architect is a professional responsible for conserving and restoring buildings or monuments having a historic value. He or she applies techniques to document and stabilise the object’s state without any further damage. A Conservation Architect restores the monuments and heritage buildings to bring them back to their original state.

Structural Engineer

A Structural Engineer designs buildings, bridges, and other related structures. He or she analyzes the structures and makes sure the structures are strong enough to be used by the people. A career as a Structural Engineer requires working in the construction process. It comes under the civil engineering discipline. A Structure Engineer creates structural models with the help of computer-aided design software. 

Highway Engineer

Highway Engineer Job Description:  A Highway Engineer is a civil engineer who specialises in planning and building thousands of miles of roads that support connectivity and allow transportation across the country. He or she ensures that traffic management schemes are effectively planned concerning economic sustainability and successful implementation.

Field Surveyor

Are you searching for a Field Surveyor Job Description? A Field Surveyor is a professional responsible for conducting field surveys for various places or geographical conditions. He or she collects the required data and information as per the instructions given by senior officials. 

Orthotist and Prosthetist

Orthotists and Prosthetists are professionals who provide aid to patients with disabilities. They fix them to artificial limbs (prosthetics) and help them to regain stability. There are times when people lose their limbs in an accident. In some other occasions, they are born without a limb or orthopaedic impairment. Orthotists and prosthetists play a crucial role in their lives with fixing them to assistive devices and provide mobility.

Pathologist

A career in pathology in India is filled with several responsibilities as it is a medical branch and affects human lives. The demand for pathologists has been increasing over the past few years as people are getting more aware of different diseases. Not only that, but an increase in population and lifestyle changes have also contributed to the increase in a pathologist’s demand. The pathology careers provide an extremely huge number of opportunities and if you want to be a part of the medical field you can consider being a pathologist. If you want to know more about a career in pathology in India then continue reading this article.

Veterinary Doctor

Speech therapist, gynaecologist.

Gynaecology can be defined as the study of the female body. The job outlook for gynaecology is excellent since there is evergreen demand for one because of their responsibility of dealing with not only women’s health but also fertility and pregnancy issues. Although most women prefer to have a women obstetrician gynaecologist as their doctor, men also explore a career as a gynaecologist and there are ample amounts of male doctors in the field who are gynaecologists and aid women during delivery and childbirth. 

Audiologist

The audiologist career involves audiology professionals who are responsible to treat hearing loss and proactively preventing the relevant damage. Individuals who opt for a career as an audiologist use various testing strategies with the aim to determine if someone has a normal sensitivity to sounds or not. After the identification of hearing loss, a hearing doctor is required to determine which sections of the hearing are affected, to what extent they are affected, and where the wound causing the hearing loss is found. As soon as the hearing loss is identified, the patients are provided with recommendations for interventions and rehabilitation such as hearing aids, cochlear implants, and appropriate medical referrals. While audiology is a branch of science that studies and researches hearing, balance, and related disorders.

An oncologist is a specialised doctor responsible for providing medical care to patients diagnosed with cancer. He or she uses several therapies to control the cancer and its effect on the human body such as chemotherapy, immunotherapy, radiation therapy and biopsy. An oncologist designs a treatment plan based on a pathology report after diagnosing the type of cancer and where it is spreading inside the body.

Are you searching for an ‘Anatomist job description’? An Anatomist is a research professional who applies the laws of biological science to determine the ability of bodies of various living organisms including animals and humans to regenerate the damaged or destroyed organs. If you want to know what does an anatomist do, then read the entire article, where we will answer all your questions.

For an individual who opts for a career as an actor, the primary responsibility is to completely speak to the character he or she is playing and to persuade the crowd that the character is genuine by connecting with them and bringing them into the story. This applies to significant roles and littler parts, as all roles join to make an effective creation. Here in this article, we will discuss how to become an actor in India, actor exams, actor salary in India, and actor jobs. 

Individuals who opt for a career as acrobats create and direct original routines for themselves, in addition to developing interpretations of existing routines. The work of circus acrobats can be seen in a variety of performance settings, including circus, reality shows, sports events like the Olympics, movies and commercials. Individuals who opt for a career as acrobats must be prepared to face rejections and intermittent periods of work. The creativity of acrobats may extend to other aspects of the performance. For example, acrobats in the circus may work with gym trainers, celebrities or collaborate with other professionals to enhance such performance elements as costume and or maybe at the teaching end of the career.

Video Game Designer

Career as a video game designer is filled with excitement as well as responsibilities. A video game designer is someone who is involved in the process of creating a game from day one. He or she is responsible for fulfilling duties like designing the character of the game, the several levels involved, plot, art and similar other elements. Individuals who opt for a career as a video game designer may also write the codes for the game using different programming languages.

Depending on the video game designer job description and experience they may also have to lead a team and do the early testing of the game in order to suggest changes and find loopholes.

Radio Jockey

Radio Jockey is an exciting, promising career and a great challenge for music lovers. If you are really interested in a career as radio jockey, then it is very important for an RJ to have an automatic, fun, and friendly personality. If you want to get a job done in this field, a strong command of the language and a good voice are always good things. Apart from this, in order to be a good radio jockey, you will also listen to good radio jockeys so that you can understand their style and later make your own by practicing.

A career as radio jockey has a lot to offer to deserving candidates. If you want to know more about a career as radio jockey, and how to become a radio jockey then continue reading the article.

Choreographer

The word “choreography" actually comes from Greek words that mean “dance writing." Individuals who opt for a career as a choreographer create and direct original dances, in addition to developing interpretations of existing dances. A Choreographer dances and utilises his or her creativity in other aspects of dance performance. For example, he or she may work with the music director to select music or collaborate with other famous choreographers to enhance such performance elements as lighting, costume and set design.

Social Media Manager

A career as social media manager involves implementing the company’s or brand’s marketing plan across all social media channels. Social media managers help in building or improving a brand’s or a company’s website traffic, build brand awareness, create and implement marketing and brand strategy. Social media managers are key to important social communication as well.

Photographer

Photography is considered both a science and an art, an artistic means of expression in which the camera replaces the pen. In a career as a photographer, an individual is hired to capture the moments of public and private events, such as press conferences or weddings, or may also work inside a studio, where people go to get their picture clicked. Photography is divided into many streams each generating numerous career opportunities in photography. With the boom in advertising, media, and the fashion industry, photography has emerged as a lucrative and thrilling career option for many Indian youths.

An individual who is pursuing a career as a producer is responsible for managing the business aspects of production. They are involved in each aspect of production from its inception to deception. Famous movie producers review the script, recommend changes and visualise the story. 

They are responsible for overseeing the finance involved in the project and distributing the film for broadcasting on various platforms. A career as a producer is quite fulfilling as well as exhaustive in terms of playing different roles in order for a production to be successful. Famous movie producers are responsible for hiring creative and technical personnel on contract basis.

Copy Writer

In a career as a copywriter, one has to consult with the client and understand the brief well. A career as a copywriter has a lot to offer to deserving candidates. Several new mediums of advertising are opening therefore making it a lucrative career choice. Students can pursue various copywriter courses such as Journalism , Advertising , Marketing Management . Here, we have discussed how to become a freelance copywriter, copywriter career path, how to become a copywriter in India, and copywriting career outlook. 

In a career as a vlogger, one generally works for himself or herself. However, once an individual has gained viewership there are several brands and companies that approach them for paid collaboration. It is one of those fields where an individual can earn well while following his or her passion. 

Ever since internet costs got reduced the viewership for these types of content has increased on a large scale. Therefore, a career as a vlogger has a lot to offer. If you want to know more about the Vlogger eligibility, roles and responsibilities then continue reading the article. 

For publishing books, newspapers, magazines and digital material, editorial and commercial strategies are set by publishers. Individuals in publishing career paths make choices about the markets their businesses will reach and the type of content that their audience will be served. Individuals in book publisher careers collaborate with editorial staff, designers, authors, and freelance contributors who develop and manage the creation of content.

Careers in journalism are filled with excitement as well as responsibilities. One cannot afford to miss out on the details. As it is the small details that provide insights into a story. Depending on those insights a journalist goes about writing a news article. A journalism career can be stressful at times but if you are someone who is passionate about it then it is the right choice for you. If you want to know more about the media field and journalist career then continue reading this article.

Individuals in the editor career path is an unsung hero of the news industry who polishes the language of the news stories provided by stringers, reporters, copywriters and content writers and also news agencies. Individuals who opt for a career as an editor make it more persuasive, concise and clear for readers. In this article, we will discuss the details of the editor's career path such as how to become an editor in India, editor salary in India and editor skills and qualities.

Individuals who opt for a career as a reporter may often be at work on national holidays and festivities. He or she pitches various story ideas and covers news stories in risky situations. Students can pursue a BMC (Bachelor of Mass Communication) , B.M.M. (Bachelor of Mass Media) , or  MAJMC (MA in Journalism and Mass Communication) to become a reporter. While we sit at home reporters travel to locations to collect information that carries a news value.  

Corporate Executive

Are you searching for a Corporate Executive job description? A Corporate Executive role comes with administrative duties. He or she provides support to the leadership of the organisation. A Corporate Executive fulfils the business purpose and ensures its financial stability. In this article, we are going to discuss how to become corporate executive.

Multimedia Specialist

A multimedia specialist is a media professional who creates, audio, videos, graphic image files, computer animations for multimedia applications. He or she is responsible for planning, producing, and maintaining websites and applications. 

Quality Controller

A quality controller plays a crucial role in an organisation. He or she is responsible for performing quality checks on manufactured products. He or she identifies the defects in a product and rejects the product. 

A quality controller records detailed information about products with defects and sends it to the supervisor or plant manager to take necessary actions to improve the production process.

Production Manager

A QA Lead is in charge of the QA Team. The role of QA Lead comes with the responsibility of assessing services and products in order to determine that he or she meets the quality standards. He or she develops, implements and manages test plans. 

Process Development Engineer

The Process Development Engineers design, implement, manufacture, mine, and other production systems using technical knowledge and expertise in the industry. They use computer modeling software to test technologies and machinery. An individual who is opting career as Process Development Engineer is responsible for developing cost-effective and efficient processes. They also monitor the production process and ensure it functions smoothly and efficiently.

AWS Solution Architect

An AWS Solution Architect is someone who specializes in developing and implementing cloud computing systems. He or she has a good understanding of the various aspects of cloud computing and can confidently deploy and manage their systems. He or she troubleshoots the issues and evaluates the risk from the third party. 

Azure Administrator

An Azure Administrator is a professional responsible for implementing, monitoring, and maintaining Azure Solutions. He or she manages cloud infrastructure service instances and various cloud servers as well as sets up public and private cloud systems. 

Computer Programmer

Careers in computer programming primarily refer to the systematic act of writing code and moreover include wider computer science areas. The word 'programmer' or 'coder' has entered into practice with the growing number of newly self-taught tech enthusiasts. Computer programming careers involve the use of designs created by software developers and engineers and transforming them into commands that can be implemented by computers. These commands result in regular usage of social media sites, word-processing applications and browsers.

Information Security Manager

Individuals in the information security manager career path involves in overseeing and controlling all aspects of computer security. The IT security manager job description includes planning and carrying out security measures to protect the business data and information from corruption, theft, unauthorised access, and deliberate attack 

ITSM Manager

Automation test engineer.

An Automation Test Engineer job involves executing automated test scripts. He or she identifies the project’s problems and troubleshoots them. The role involves documenting the defect using management tools. He or she works with the application team in order to resolve any issues arising during the testing process. 

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  • Essay On Solar System

Essay on Solar System

500+ words essay on solar system.

The Sun and all other planets and celestial bodies that revolve around it are together called a solar system. Our solar system consists of eight planets and an asteroid belt. These planets are termed inner and outer planets. Earth, Venus, Mercury and Mars are considered inner planets closer to the Sun and smaller, also known as terrestrial planets. The remaining four planets, Jupiter, Saturn, Uranus, and Neptune, are outer planets that are massive and termed giant planets.

This essay will discuss our solar system and give a detailed summary of the eight planets.

Planets are large celestial bodies that revolve around the Sun in fixed orbits. They don’t have their own lights and use the Sun’s light to reflect light. As stars, planets don’t twinkle because they are closer to us. The planets Mercury, Venus, Earth and Mars, remain in the inner solar system, and the outer solar system planets are Jupiter, Saturn, Uranus, and Neptune. Among all the planets, Earth is the only planet where life exists.

Satellites are objects that revolve around the Sun. Satellites can be categorised into two types – natural and man-made. For example, the Moon is a natural satellite that revolves around the Earth.

Man-made Satellite

Man-made satellites are artificial satellites sent to space to gather information about other planets. The first artificial satellite sent by India into space is Aryabhatta.

Asteroids are small, rocky objects that revolve around the Sun. Most asteroids are made of different rocks, but some have clays or metals, such as nickel and iron. Asteroids have irregular shapes and are not round-like planets.

Comets are irregularly shaped bodies composed of non-volatile grains and frozen gases. For example, Haley’s comet is a comet that occurs once every 76 years.

Dwarf planets

Dwarf planets are heavenly bodies that are too small to be considered a planet but too large to fall under smaller categories. Example: Pluto

Our Solar System

The nearest and the smallest planet in our solar system is Mercury. The planet is hidden under the Sunlight, which can only be seen before sunrise or sunset.

Venus is the closest and brightest planet in our solar system other than the Sun and the Moon. It is known as the morning and evening star because it appears in the eastern sky before Sunrise and in the western sky after sunset.

In our solar system, the Earth is the only planet that favours life. On this planet, life is possible because of conditions like water and atmosphere and the favourable distance from the Sun. The Earth’s rotation of axis is tilted, due to which we witness seasonal changes, and the Moon is the only natural satellite of planet Earth. From outer space, the colour of the Earth appears bluish-green as light from the landmass and water bodies gets reflected.

Mars is the fourth planet from the Sun. It is often called the “Red Planet” because the reddish iron oxide prevalent on its surface gives it a reddish appearance. Mars has two natural satellites.

Jupiter is the largest planet in our solar system. So big that it can accommodate 1300 piles of Earth. However, it is only 318 times heavier than Earth. Jupiter has at least 67 Moons. Jupiter has a big red spot, a gigantic one twice as wide as the Earth, that has been swirling for many years.

Saturn is the second-largest planet in our solar system. It is unique as it has thousands of beautiful rings. Saturn has numerous Moons.

Uranus and Neptune

Uranus rotates from west to east. Its axis has a huge tilt, making it look like it’s spinning on its side. Neptune is the eighth and farthest planet in our solar system. It has powerful winds, which are more potent than any other planet in the solar system.

Scientists and astronomers have been studying our solar system for centuries, and the findings are pretty interesting. Various planets that form a part of our solar system have their unique geological features, and all are different from each other in several ways. But, unfortunately, after years of exploration, the Universe has still more mysteries that are left unknown.

From our BYJU’S website, students can also access CBSE Essays related to different topics. It will help students to get good marks in their exams.

Frequently Asked Questions on Solar system Essay

Are there any other systems present in the universe.

Research has shown that there are several other systems existing in the universe other than our Solar system.

Does the solar system only consist of planets?

No, the solar system also consists of dwarf planets, asteroids, comets, etc.

Has the Solar system fully been discovered?

Although there are several types of research going on, there are still many undiscovered and unreachable regions of the Solar system.

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The solar system, explained

Our solar system is made up of the sun and all the amazing objects that travel around it.

The universe is filled with billions of star systems. Located inside galaxies, these cosmic arrangements are made up of at least one star and all the objects that travel around it, including planets, dwarf planets, moons, asteroids, comets, and meteoroids. The star system we’re most familiar with, of course, is our own.

Home sweet home

If you were to look at a giant picture of space, zoom in on the Milky Way galaxy , and then zoom in again on one of its outer spiral arms, you’d find the solar system. Astronomers believe it formed about 4.5 billion years ago, when a massive interstellar cloud of gas and dust collapsed on itself, giving rise to the star that anchors our solar system—that big ball of warmth known as the sun.

Along with the sun, our cosmic neighborhood includes the eight major planets. The closest to the sun is Mercury , followed by Venus , Earth, and Mars . These are known as terrestrial planets, because they’re solid and rocky. Beyond the orbit of Mars, you’ll find the main asteroid belt , a region of space rocks left over from the formation of the planets. Next come the much bigger gas giants Jupiter and Saturn , which is known for its large ring systems made of ice, rock, or both. Farther out are the ice giants Uranus and Neptune . Beyond that, a host of smaller icy worlds congregate in an enormous stretch of space called the Kuiper Belt. Perhaps the most famous resident there is Pluto . Once considered the ninth planet, Pluto is now officially classified as a dwarf planet , along with three other Kuiper Belt objects and Ceres in the asteroid belt.

Moons and other matter

More than 150 moons orbit worlds in our solar system. Known as natural satellites, they orbit planets, dwarf planets, asteroids, and other debris. Among the planets, moons are more common in the outer reaches of the solar system. Mercury and Venus are moon-free, Mars has two small moons, and Earth has just one. Meanwhile, Jupiter and Saturn have dozens, and Uranus and Neptune each have more than 10. Even though it’s relatively small, Pluto has five moons, one of which is so close to Pluto in size that some astronomers argue Pluto and this moon, Charon, are a binary system.

an illustration of the solar system.

Too small to be called planets, asteroids are rocky chunks that also orbit our sun along with the space rocks known as meteoroids. Tens of thousands of asteroids are gathered in the belt that lies between the orbits of Mars and Jupiter. Comets, on the other hand, live inside the Kuiper Belt and even farther out in our solar system in a distant region called the Oort cloud .

Atmospheric conditions

The solar system is enveloped by a huge bubble called the heliosphere . Made of charged particles generated by the sun, the heliosphere shields planets and other objects from high-speed interstellar particles known as cosmic rays. Within the heliosphere, some of the planets are wrapped in their own bubbles—called magnetospheres —that protect them from the most harmful forms of solar radiation. Earth has a very strong magnetosphere, while Mars and Venus have none at all.

Most of the major planets also have atmospheres . Earth’s is composed mainly of nitrogen and oxygen—key for sustaining life. The atmospheres on terrestrial Venus and Mars are mostly carbon dioxide, while the thick atmospheres of Jupiter, Saturn, Uranus, and Neptune are made primarily of hydrogen and helium. Mercury doesn’t have an atmosphere at all. Instead scientists refer to its extremely thin covering of oxygen, hydrogen, sodium, helium, and potassium as an exosphere.

Moons can have atmospheres, too, but Saturn’s largest moon, Titan, is the only one known to have a thick atmosphere, which is made mostly of nitrogen.

Life beyond?

For centuries astronomers believed that Earth was the center of the universe, with the sun and all the other stars revolving around it. But in the 16th century, German mathematician and astronomer Nicolaus Copernicus upended that theory by providing strong evidence that Earth and the other planets travel around the sun.

Today, astronomers are studying other stars in our galaxy that host planets, including some star systems like our own that have multiple planetary companions. Based on the thousands of known worlds spotted so far, scientists estimate that billions of planetary systems must exist in the Milky Way galaxy alone.

So does Earth have a twin somewhere in the universe? With ever-advancing telescopes, robots, and other tools, astronomers of the future are sure to find out.

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Essay on Our Solar System

write an essay on the planets

There are eight planets in our solar system. The Sun is at the center, and the planets revolve around it. Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune are the eight planets. The path of the planets is known as an orbit.

Mercury is nearest to the Sun. Neptune is the farthest planet. Jupiter is the biggest planet among all of them. Saturn is the only planet which has rings around it.

The earth is the third planet from the Sun. It is the only planet on which life exists. It has one natural satellite, the Moon. Jupiter has 63 moons. Saturn has 60 moons. It has some of the largest moons in our solar system.

The galaxy in which our solar system lies is known as the Milky Way.

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Essay on Earth

500 words essay on earth.

The earth is the planet that we live on and it is the fifth-largest planet. It is positioned in third place from the Sun. This essay on earth will help you learn all about it in detail. Our earth is the only planet that can sustain humans and other living species. The vital substances such as air, water, and land make it possible.

essay on earth

All About Essay on Earth

The rocks make up the earth that has been around for billions of years. Similarly, water also makes up the earth. In fact, water covers 70% of the surface. It includes the oceans that you see, the rivers, the sea and more.

Thus, the remaining 30% is covered with land. The earth moves around the sun in an orbit and takes around 364 days plus 6 hours to complete one round around it. Thus, we refer to it as a year.

Just like revolution, the earth also rotates on its axis within 24 hours that we refer to as a solar day. When rotation is happening, some of the places on the planet face the sun while the others hide from it.

As a result, we get day and night. There are three layers on the earth which we know as the core, mantle and crust. The core is the centre of the earth that is usually very hot. Further, we have the crust that is the outer layer. Finally, between the core and crust, we have the mantle i.e. the middle part.

The layer that we live on is the outer one with the rocks. Earth is home to not just humans but millions of other plants and species. The water and air on the earth make it possible for life to sustain. As the earth is the only livable planet, we must protect it at all costs.

Get the huge list of more than 500 Essay Topics and Ideas

There is No Planet B

The human impact on the planet earth is very dangerous. Through this essay on earth, we wish to make people aware of protecting the earth. There is no balance with nature as human activities are hampering the earth.

Needless to say, we are responsible for the climate crisis that is happening right now. Climate change is getting worse and we need to start getting serious about it. It has a direct impact on our food, air, education, water, and more.

The rising temperature and natural disasters are clear warning signs. Therefore, we need to come together to save the earth and leave a better planet for our future generations.

Being ignorant is not an option anymore. We must spread awareness about the crisis and take preventive measures to protect the earth. We must all plant more trees and avoid using non-biodegradable products.

Further, it is vital to choose sustainable options and use reusable alternatives. We must save the earth to save our future. There is no Planet B and we must start acting like it accordingly.

Conclusion of Essay on Earth

All in all, we must work together to plant more trees and avoid using plastic. It is also important to limit the use of non-renewable resources to give our future generations a better planet.

FAQ on Essay on Earth

Question 1: What is the earth for kids?

Answer 1: Earth is the third farthest planet from the sun. It is bright and bluish in appearance when we see it from outer space. Water covers 70% of the earth while land covers 30%. Moreover, the earth is the only planet that can sustain life.

Question 2: How can we protect the earth?

Answer 2: We can protect the earth by limiting the use of non-renewable resources. Further, we must not waste water and avoid using plastic.

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Essays About Earth: 7 Essay Examples And Topic Ideas

There are many things you need to know about our planet, so if you’re making essays about Earth, you can read these sample essays and topic ideas.

The planet Earth is where we, humans, and other living creatures live. It also provides us with all the necessities we need – air to breathe, water to drink, and soil to grow fruits and vegetables. Without its natural resources, life would be impossible for all of us. 

Writing an essay about Earth can help give knowledge and spread awareness about climate change or look at the beauty of our planet. If you are writing an essay about the Earth, here are some essay examples and topic ideas to help you get started.

Tip: If you want to use the latest grammar software, read our guide to using an AI grammar checker .

1. Short Essay On The Structure Of Planet Earth By Shyam Soni

2. interest and concern about the fate of the earth by john olson, 3. our planet in danger by derrick wells, 4. a planet without trees: a nightmare or our future by shannon cain, 5. the possibility of an asteroid falling to earth by lewis rios, 6. save earth before colonizing mars by luz estrada, 7. my earth, my responsibility by poonam ghimire, topic idea essays about earth, 1. are there more planets like earth, 2. how has the earth’s surface changed over the years, 3. causes and effects of global warming, 4. does planting trees and reforestation help limit global warming, 5. how does population growth affect earth’s climate change, 6.  human impacts on the planet earth, 7. how did the planet earth form.

“Direct observation of the interior of the Earth is not possible as the interior becomes hotter with depth which is convincingly indicated by the volcanic eruptions. Apart from the seismological studies, other important sources of data, even though indirect, logically prove that the Earth’s body comprises several layers, which are like shells resting one above the other. These layers are distinguished by their physical and chemical properties, particularly, their thickness, depth, density, temperature, metallic content, and rocks.”

Author Shyam Soni discusses some essential facts about the structure of the planet Earth. This essay focuses on its layered structure and the differences in the density and temperature at different depths.

“I have found myself increasingly interested and concerned with the fate of the Earth and the way humankind views sustainability. In my perspective, many humans believe that Earth’s materials and resources are infinite, they will always be there to feed and maintain human life. The Earth will endlessly support and provide for the needs of the humans that inhabit it. Yet, that is just simply not true, as the human population grows we use more and more of the natural resources Earth provides.”

Author John Olson shares his point of view about the Earth’s “infinite” resources and its sustainability. However, Olson tells us that it may not be as unlimited as we think because of the rapid growth of the human population.

“Since the beginning of the Industrial Revolution in the 18th century that started in England, the people during those times were already writing down the blueprint for a problem that the succeeding generations will have to face – the increasing problem of Carbon Dioxide emissions in our atmosphere. Carbon dioxide (CO2) is released in tons, millions of tons every day in every country – released from various factories and cars most especially. This buildup of toxic gases such as the carbon dioxide heats up our planet thereby increasing the possibility, and the danger of global warming – this is what we call the greenhouse effect.”

Author Derrick Wells talks about one of the environmental problems we are facing today – the Greenhouse Effect and the actions that we could take to save our planet Earth from the danger it can pose.

“Can we imagine a world without trees? What a world without trees would look like? Could such a world even exist? Let us close our eyes, and try to imagine a desolate Earth. Imagine no more paper, and everyone would have to resort to some other source or maybe technology could help, but that is, if anyone was left at that time. Trees are an important factor to our existence not only because they produce paper, lumber, or chewing gum, but due to the fact that they serve an important role in the carbon cycle, they are the key to our very existence! Due to the ever increasing population, that seemingly distant future is getting near each passing day.”

Author Shannon Cain shares his thought about a planet without trees, telling us what it would be like and what we can do to prevent it from happening to our home planet – the Earth. 

“Jonathan Haidt gave a speech about the possibility of an asteroid falling on Earth and asked the audience what people could do to stop them. Haidt notes that if an asteroid threatens to destroy the Earth, people will forget about their differences and stand together to fight for their survival. This is what he refers a common ground in the midst of a crisis. Haidt’s video shows us the many problems that people are facing, but yet people cannot find a common ground to fight them while the issues are threatening all of us.”

Author Lewis Rios talks about the possibility of an asteroid falling on Earth and then relates it to some common problems we are facing right now. Such as poverty, which tells us that we should all cooperate and work together to find a solution to these threats to survive. 

“Has humanity irreversibly defaced Earth from being a sustainable planet for further centuries? Many would believe that humanity has come to a point of constant destruction of Earth with no hope for change. This thought process has come forth with the resolution of starting a new sustainable planet on Mars. However, it is tremendously more challenging to restart than to fix damage and change simplistic daily routines.” 

Author Luz Estrada shares her opinion about the plan of starting a new sustainable planet on Mars. Estrada shares with the readers that it is much easier to save and fix Earth – as it is now – rather than thinking of starting a new life on a different planet, which is impossible for most people.

“Earth is a beautiful living planet in the Universe and the common habitat of more than 7 billion human population and millions of species of biodiversity. Our Earth provides us with food, shelter, and most of our requirements. Despite unavoidable free services provided by the earth to humans, we are not able to pay off her kindness to us. Rather we humans are being cruel to our Earth with our selfish activities.”

Author Poonam Ghimire talks about the selfish acts that cause Earth’s slow destruction. Ghimire encourages the readers to be responsible enough to protect and preserve our planet for the next generations.

Earth, our home, is the only planet known to support life, although there are current missions determining Mars’ past and future potential for life. While scientists continue to look for signs of life elsewhere in the universe, Earth remains the only place where we’ve ever identified living creatures. If you are writing an essay about the Earth, you can use this topic idea to discuss some Earth-like planets discovered so far.

The planet Earth has not always looked the same way it looks today; the United States, a billion years ago, was in a completely different location compared to where it is today! So, how does this happen? Why does this happen? In your essay about the Earth, you can use this topic idea to give the readers some understanding of how our planet has changed over time – like the things that took place and are still taking place.

Recent global warming is mainly because of human actions, which involve releasing greenhouse gases into the atmosphere. An increase in greenhouse gases leads to a more significant greenhouse effect, which results in increased global warming. Global warming is also being felt everywhere – drought, heatwaves, melting glaciers, rising sea levels, and storms. If you are writing an essay about the Earth, you can discuss this topic in more detail to spread awareness to your readers out there.

Essays About Earth: Does planting trees and reforestation help limit global warming

Planting more trees is one of the most effective ways to lessen atmospheric carbon dioxide (CO2) and stop global warming. As the forests grow, they remove the carbon dioxide from the air through photosynthesis, which works as a natural reservoir to store carbon. Reforestation, one of the planned projects worldwide, is thought to help protect the environment for the next generations. You can use this topic idea for your essay about the Earth to encourage your readers to plant more trees to reduce the harmful effects of deforestation and save our home planet, Earth, from getting slowly destroyed.

Since humans require fossil fuels to power their increasingly mechanized lifestyles, human population growth is undoubtedly a significant contributor to global warming. More people mean more demand for oil, gas, coal, and other underground fuels that, when burned, release enough carbon dioxide (CO2) into the atmosphere to trap warm air inside like a greenhouse. So, in your essay about the Earth, let your readers know to what extent human population growth affects climate change and what can be done about it. 

Humans affect the planet Earth in many ways – overpopulation, pollution, burning fossil fuels, and deforestation. These things have caused global warming, soil erosion, poor air quality, and non-potable water. In your essay about the Earth, you can detail these negative impacts and how they can affect us, humans. 

The planet Earth’s formation remains a bizarre, scientific mystery. This is because we live on a planet in a solar system with seven other planets, and thousands of exoplanets have been discovered so far. However, the formation of planets like Earth is still a hotly debated topic. So, currently, there are only 2 leading theories about planetary formation – in your essay about the earth, look into this topic in more detail to share some exciting facts about the Earth with your readers. 

If you’re stuck picking your next essay topic, check out our guide on how to write a diverse essay.

If you’re still stuck, check out our general resource of essay writing topics .

write an essay on the planets

Bryan Collins is the owner of Become a Writer Today. He's an author from Ireland who helps writers build authority and earn a living from their creative work. He's also a former Forbes columnist and his work has appeared in publications like Lifehacker and Fast Company.

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Essay On Solar System – 10 Lines, Short and Long Essay for Children and Students

Essay On Solar System – 10 Lines, Short and Long Essay for Children and Students

Key Points to Remember When Writing an Essay on the Solar System

10 lines on solar system, a paragraph on solar system, short essay on solar system, long essay of the solar system in english, what will your child learn from the essay on the solar system.

Writing essays can be an incredible journey of exploration, especially when diving into fascinating topics like the solar system. A solar system essay, like the one we’re about to embark on, provides an opportunity to understand the vast universe we are a part of. By attempting this essay in English, students can improve their language skills, enhance their creativity, and develop a deeper appreciation for the wonders beyond our planet. Now, let’s travel through space and time to understand the marvellous entity we call the solar system.

When you embark on the enlightening journey of writing an essay on the solar system, it’s essential to remember some fundamental aspects to make your essay stand out. These points ensure that your content is rich and informative and captivates your readers.

  • Research Thoroughly:  Before starting, gather information from credible sources. The solar system is vast, and discoveries are made regularly.
  • Keep It Organised:  Structure your essay with a proper introduction, body, and conclusion. This will help readers follow your thoughts.
  • Use Simple Language:  If it’s meant for children and students, keep your language simple and avoid jargon.
  • Include Visuals:  Include images or diagrams of planets, orbits, or other celestial bodies to make your essay more engaging and to help explain complex concepts.
  • Discuss Recent Discoveries:  Astronomy is a constantly evolving field. To keep your essay current, mention any new findings or missions.
  • Maintain Accuracy:  When mentioning facts or figures, ensure they are accurate. Mistakes in such essays can misinform readers.
  • Personal Touch:  Share anecdotes or experiences related to stargazing or space exploration. This adds a warm, personal touch to the essay.
  • Include Interesting Facts:  Sprinkle your essay with fascinating tidbits about the  solar system , like the storms on Jupiter or the possibility of water on Mars .
  • Stay Updated:  The realm of space exploration and astronomy is constantly advancing. Ensure you are updated with the latest information.
  • Proofread:  After finishing your essay, review it for any grammatical or factual errors. A well-polished essay makes a better impression.

For primary class students just beginning their exploration into the vast wonders of space, breaking down the vastness of the solar system into digestible bites is essential. The solar system can be awe-inspiring with its planets, moons, and other celestial wonders. Here’s a simple solar system 10-line essay perfect for budding astronomers and an essay for primary-class students.

1. The solar system comprises the sun and all the celestial objects around it.

2. There are eight planets:  Mercury , Venus, Earth, Mars, Jupiter,  Saturn , Uranus, and Neptune.

3. The sun is a giant star that gives us light and warmth.

4.  Earth , our home, is the third planet from the sun and the only one known to have life.

5. The  moon  is Earth’s natural satellite and orbits around us.

6.  Jupiter , the largest planet, has a giant red storm raging for centuries.

7. Between Mars and Jupiter, there’s an asteroid belt filled with rocky objects  (4) .

8. The solar system also includes comets with tails that glow when close to the sun.

9. Neptune, the farthest planet, has strong winds and dark storms  (5) .

10. Exploring our solar system helps us learn more about our place in the universe.

Young students can use these lines as a foundation and further expand their knowledge by exploring each point in depth as they grow.

Writing an essay for classes 1 & 2 can be a great way for young students to understand the solar system. To help them grasp the essentials, here’s a short essay in 100 words tailored to their comprehension level.

The solar system is like a big family in space. At the centre is the  sun , shining bright and giving us light. Around the sun, eight planets move in circles called orbits.  Earth  is one of them, and it’s where we live. Some planets have rings, like Saturn, and some have many moons. There are also tiny rocks called asteroids and icy bodies known as comets. Every member of this space family has its own unique story. By reading and learning about the solar system, kids can begin to understand the vast world beyond our blue sky.

The allure of the night sky, dotted with twinkling stars and distant planets, has always been a source of wonder for humans. Exploring the solar system’s mysteries offers profound insights into the cosmos and our place within it. The following essay, in 200 words, captures the essence of this mesmerising expanse.

Our solar system is a cosmic marvel, a vast expanse dominated by the sun’s brilliant glow. The centre of the solar system is occupied by the sun, a colossal sphere of fiery gas that makes up over 99% of the solar system’s total mass  (3) . Orbits around this central star are eight diverse planets with unique features and mysteries. The rocky planets Mercury, Venus , Earth, and  Mars  are nearest to the sun. These are followed by the gas giants, Jupiter and Saturn, and the ice giants,  Uranus  and Neptune.

In contrast, each planet provides a distinct study, from Mercury and Venus’s scorching surfaces to Neptune’s frozen realms. Beyond the planets, the solar system also shelters asteroids, comets, and dwarf planets like Pluto. As we send probes and satellites farther into space, our understanding of this vast system deepens, revealing secrets that challenge our understanding of existence. The solar system, with its intricate dance of celestial bodies, is a testament to the grandeur of the universe, beckoning us to explore and discover.

For every student and reader, understanding our solar system is the first step towards unravelling the deeper mysteries of the cosmos.

The cosmos has always fascinated mankind. Its vastness and mysteries have piqued our curiosity for centuries. To comprehend the universe’s grandeur, we must begin with our neighbourhood in space: the solar system. This solar system essay for class 3 and above offers more profound insights into our cosmic home.

What Is the Solar System?

The solar system comprises various celestial bodies held together by the sun’s gravitational pull, which sits at its centre. This dynamic system is located in the  Milky Way galaxy  and spans a distance of billions of miles. The major constituents of the solar system are the sun, eight planets, their moons, and a range of smaller objects like asteroids, comets, and dwarf planets. It is an intricate dance of objects revolving around the sun, each following its unique path and exhibiting individual characteristics.

How Does the Solar System Work?

The sun is the heart of the solar system, a colossal ball of gas undergoing nuclear fusion. It emits immense heat and light, making life possible on Earth. The sun’s gravitational force is so strong that it keeps all the planets and celestial bodies in their orbits.

The planets orbit the sun in elliptical paths. Like Mercury and Venus, those closest to the sun complete their orbits quicker than those farther away, such as  Neptune . The force of gravity also ensures that moons orbit planets. For example, our Earth has one moon, while Jupiter boasts 79 known moons!

The balance of gravity and the momentum of celestial objects keep everything in place. Without the sun’s gravitational pull, planets would drift away into the vastness of space.

Celestial Bodies Exist in the Solar System

Our solar system’s central star provides energy and light that drive life on Earth.

There are eight in total. The inner planets (Mercury, Venus, Earth, and Mars) are rocky, while the outer planets (Jupiter, Saturn, Uranus, and Neptune) are gas giants or ice giants.

Natural satellites that orbit planets. Their number varies from planet to planet.

4. Asteroids

Rocky fragments remain from the formation of the solar system. Most are found in the asteroid belt between Mars and Jupiter.

Comets are icy bodies that come from the solar system’s outer regions. When they approach the sun, they develop glowing tails.

6. Dwarf Planets

These celestial bodies orbit the sun and have enough mass for their self-gravity to overcome rigid body forces  (2) . However, they still need to clear their neighbouring region of other objects. Pluto  is the most famous dwarf planet.

7. Kuiper Belt & Oort Cloud

These are regions beyond Neptune filled with millions of icy objects. The Kuiper Belt is closer than the Oort Cloud and is the birthplace of short-term comets  (1) .

Our solar system is breathtakingly vast and dynamic, filled with various celestial bodies. Its complex mechanisms and operations provide invaluable insights into the universe’s workings. Understanding the solar system is not just a part of the curriculum for students in class 3 and above; it is a journey into the wondrous realm of space. This essay aims to be a guide, igniting young minds’ curiosity and exploration.

Through the essay on the solar system, your child will gain a foundational understanding of our cosmic neighbourhood, grasping the vastness and intricacies of space. Beyond mere facts, the essay fosters curiosity, inspiring them to dig deeper into the mysteries of the universe and comprehend the grandeur and significance of the celestial dance above us.

1. Where is the solar system situated?

The solar system is in the Milky Way galaxy, in one of its spiral arms called the Orion Arm.

2. How many total solar systems exist?

Numerous solar systems exist, with billions believed to reside in our Milky Way galaxy alone. This showcases the vast expanse and diversity of solar systems.

The solar system’s myriad celestial bodies and dynamic interplays provide a window into the cosmos’s infinite wonders. Understanding and appreciating its grandeur satiates our innate curiosity and helps us find our humble place within the vast tapestry of the universe.

References/Resources

1. Relationship of the Kuiper Belt to the Oort Cloud; The European Space Agency; https://esahubble.org/images/opo0204i/

2. What is a Dwarf Planet?; Jet Propulsion Laboratory; https://www.jpl.nasa.gov/infographics/what-is-a-dwarf-planet ; April 2015

3. Our Sun: Facts; NASA; https://science.nasa.gov/sun/facts/

4. Asteroids: Facts; NASA; https://science.nasa.gov/solar-system/asteroids/facts/

5. Neptune Facts; NASA; https://science.nasa.gov/neptune/facts/

Also Read: 

Facts About Space for Children

write an essay on the planets

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English Compositions

Short Essay on Our Planet Earth [100, 200, 400 words] With PDF

Earth is the only planet that sustains life and ecosystems. In this lesson, you will learn to write essays in three different sets on the planet earth to help you in preparing for your upcoming examinations.

Feature image of Short Essay on Our Planet Earth

Short Essay on Our Planet Earth in 100 Words

Earth is a rare planet since it is the only one that can support life. On Earth, life is possible for various reasons, the most essential of which are the availability of water and the presence of oxygen. Earth is a member of the Solar System. The Earth, along with the other seven planets, orbits the Sun.

One spin takes approximately twenty-four hours, and one revolution takes 365 days and four hours. Day and night, as well as the changing of seasons, occurs due to rotation and revolution. However, we have jeopardized our planet by our sheer ignorance and negligence. We must practise conservation of resources and look after mother earth while we have time.

Short Essay on Our Planet Earth in 200 Words

Earth is a blue planet that is special from the rest of the planets because it is the only one to sustain life. The availability of water and oxygen are two of the most crucial factors that make life possible on Earth. The Earth rotates around the Sun, along with seven other planets in the solar system. It takes 24 hours to complete one rotation, and approximately 365 days and 4 hours to complete one revolution. Day and night, as well as changing seasons, are all conceivable due to these two movements. 

However, we are wasting and taking advantage of the natural resources that have been bestowed upon us. Overuse and exploitation of all-natural resources produce pollution to such an alarming degree that life on Earth is on the verge of extinction. The depletion of the ozone layer has resulted in global warming. The melting of glaciers has resulted in rising temperatures.

Many animals have become extinct or are endangered. To protect the environment, we must work together. Conversation, resource reduction, reuse, and recycling will take us a long way toward restoring the natural ecosystem. We are as unique as our home planet. We have superior intelligence, which we must employ for the benefit of all living beings. The Earth is our natural home, and we must create a place that is as good as, if not better than, paradise.

Short Essay on Our Planet Earth in 400 Words

Earth is a unique planet as it is the only planet that sustains life. Life is possible on Earth because of many reasons, and the most important among them is the availability of water and oxygen. Earth is a part of the family of the Sun. It belongs to the Solar System.

Earth, along with seven other planets, revolves around the Sun. It takes roughly twenty-four hours to complete one rotation and 365 days and 4 hours to complete one revolution. Rotation and revolution make day and night and change of seasons simultaneously possible. The five seasons we experience in one revolution are Spring, Summer, Monsoon, Autumn, and Winter.

However, we are misusing resources and exploiting the natural gifts that have been so heavily endowed upon us. Overuse and misuse of all the natural resources are causing pollution to such an extent that it has become alarming to the point of destruction. The most common form of pollution caused upon the earth by us is Air Pollution, Land Pollution, Water Pollution, and Noise Pollution.

This, in turn, had resulted in Ozone Layer Depletion and Global Warming. Due to ozone layer depletion, there harmful ultraviolet rays of the sun are reaching the earth. It, in turn, is melting glaciers and causing a rise in temperature every year. Many animals have either extinct or are endangered due to human activities.

Some extinct animals worldwide are Sabre-toothed Cat, Woolly Mammoth, Dodo, Great Auk, Stellers Sea Cow, Tasmanian Tiger, Passenger Pigeon, Pyrenean Ibex. The extinct animals in the Indian subcontinent are the Indian Cheetah, pink-headed duck, northern Sumatran rhinoceros, and Sunderban dwarf rhinoceros.

The endangered animals that are in need of our immediate attention in India are Royal Bengal Tiger, Snow leopard, Red panda, Indian rhinoceros, Nilgiri tahr, Asiatic lion, Ganges river dolphin, Gharial and Hangul, among others. We have exploited fossil fuels to such an extent that now we run the risk of using them completely. We must switch to alternative sources of energy that are nature friendly. Solar power, windmills, hydra power should be used more often, and deforestation must be made illegal worldwide.

We must come together to preserve the natural environment. Conversation, reduction, reuse and recycling of the resources will take us a long way in rebuilding the natural habitat. We are as unique as our planet earth. We have higher intelligence, and we must use it for the well-being of all living organisms. The Earth is our natural abode, and we must make a place as close to Paradise, if not better.

Hopefully, after going through this lesson, you have a holistic idea about our planet Earth. I have tried to cover every aspect that makes it unique and the reasons to practise conversation of natural resources. If you still have any doubts regarding this session, kindly let me know through the comment section below. To read more such essays on many important topics, keep browsing our website. 

Join us on Telegram to get the latest updates on our upcoming sessions. Thank you, see you again soon.

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Essay on Life On Other Planets

Students are often asked to write an essay on Life On Other Planets in their schools and colleges. And if you’re also looking for the same, we have created 100-word, 250-word, and 500-word essays on the topic.

Let’s take a look…

100 Words Essay on Life On Other Planets

Introduction.

The universe is a vast place full of galaxies, stars, and planets. One of the biggest questions we have is, “Is there life on other planets?” This question has sparked much interest and research in the scientific community.

Searching for Life

Scientists use powerful telescopes to look for planets that could support life. They are called “exoplanets”. We look for signs of water, air, and suitable temperatures, as these are important for life as we know it.

If there is life on other planets, it may not look like us. It could be tiny microbes or strange creatures adapted to their planet’s conditions. We keep an open mind about what we might find.

The Mars Example

Mars, our neighbor, is a great example. It has water ice and used to have flowing rivers. Scientists are studying Mars to see if it ever had life. Rovers like Perseverance are helping in this mission.

While we have not found clear evidence of life on other planets yet, the search continues. The universe is so large, we may not be alone. The question of life on other planets is exciting and full of possibilities.

250 Words Essay on Life On Other Planets

Exploring the universe.

The universe is very big and filled with many planets, stars, and galaxies. Scientists are always trying to find out if there is life on other planets. They use telescopes and space probes to look for signs of life.

Life Beyond Earth

Life on other planets would be very different from life on Earth. It could be tiny microbes or big creatures. These alien life forms might not need air or water to live. They might survive in extremely cold or hot temperatures, or even in outer space!

The Search for Life

Scientists are mainly looking at planets in the “Goldilocks Zone”. This zone is just right – not too hot, not too cold – for life as we know it. Mars, for example, is a planet in this zone. It has water, but we don’t know yet if it has life.

Proof of Life

Finding proof of life on other planets is not easy. Space probes have found signs that there might have been water on Mars in the past. Some scientists think this could mean that there was life on Mars long ago. But we need more evidence to be sure.

The Future of Exploration

In the future, we might send astronauts to Mars or other planets to look for life. We might also find new ways to look for life on planets that are very far away. The search for life on other planets is exciting and full of possibilities.

In conclusion, the universe is a big place and there may be life on other planets. We just need to keep exploring and looking for signs of it.

500 Words Essay on Life On Other Planets

The universe is huge, with billions of stars and planets. One question that has always fascinated us is, “Is there life on other planets?” This question is not easy to answer. But scientists are working hard to find out.

What is Extraterrestrial Life?

Extraterrestrial life means life that is not from Earth. It could be small things like bacteria or big things like animals or even beings like us. We don’t know what it might look like. It might not even be something we can imagine.

Scientists use different methods to look for life on other planets. One way is to study the atmosphere of a planet. If there are gases like oxygen or methane, it might mean there is life. Another way is to send spacecraft to other planets to look for signs of life. This is what we did with Mars. We sent rovers to explore the planet and look for signs of past or present life.

Life on Mars?

Mars is a planet that is very similar to Earth. It has an atmosphere, and there is evidence that there was once water on its surface. Some scientists think that there might have been life on Mars in the past. The rovers that we sent to Mars have found things like organic molecules and signs of ancient water. These could be signs of past life. But we still don’t know for sure.

Life Beyond Our Solar System

What about planets outside our solar system? These are called exoplanets. We have found thousands of them. Some of these exoplanets are in the “habitable zone”. This means they are not too hot and not too cold for life as we know it. Scientists are studying these exoplanets to see if they might have life.

The search for life on other planets is exciting. It makes us think about the possibilities. Are we alone in the universe? Or is there life out there, waiting to be discovered? We don’t know the answers yet. But the search continues. One day, we might find that we are not alone. That would be one of the most exciting discoveries in human history.

That’s it! I hope the essay helped you.

If you’re looking for more, here are essays on other interesting topics:

  • Essay on Life On Moon
  • Essay on Life On Mars
  • Essay on Life On Land

Apart from these, you can look at all the essays by clicking here .

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Life on Other Planets Essay

Article review.

The article chosen for this part of the assignment is titled “The Extremely Halophilic Microorganisms, a Possible Model for Life on Other Planets,” written by Sergiu Fendrihan, and published in 2017 in Current Trends in Natural Sciences journal. The researchers have analyzed the microscopic life that exists in areas of extreme heat, where water supply exists in the form of salt lakes (Fendrihan 148). Such areas include the Dead Sea, located in the Middle East, as well as various smaller salt lakes found in Africa and Australia.

What these locations have in common is the extremity of conditions in which microorganisms have to exist. According to Fendrihan (148), there is a multitude of halophilic and halotolerant microorganisms inhabiting these areas, up to 159 different subspecies belonging to the Halobacteriaceae family. In addition, these organisms prove to be very resistant to other extremes, such as UV radiation, heat, and lack of nutrients necessary for other bacteria.

Due to the extreme resistance of these bacteria to various hazards, this study provides important data for discovering life on other planets and moons. Mars exhibits signs of water having been present on its surface. In addition, evidence of salty underground oceans has been found on the moons of Saturn and Jupiter (Enceladus and Europa).

Thus, studying halophilic microorganisms supports the possibility of the existence of life on planets previously deemed uninhabitable. Low requirements for water and nutrients as well as high resistance to the elements increases their chances of survival. Investigating these planets would enrich the existing knowledge of space and biology.

Article Discussions

The article titled “Life on Mars: Exploration and Evidence” by Nola Taylor Redd provides cursory information about the state of research regarding life on Mars. The planet used to have large water deposits that were lost due to irradiation and exposure to harsh temperatures. The article suggests that life on Mars may still exist underneath the surface of the planet (Redd). Question: What exactly happened that altered Mars’s climate and caused it to lose so much of its water?

The second article titled “Aliens May Well Exist in a Parallel Universe, New Studies Find” by Brandon Specktor speculates about the existence of life in other dimensions. This article seems more like speculation rather than a contribution to the scientific community, as evidence of the existence of other dimensions is purely theoretical (Specktor). Question: If parallel universes exist, can they influence the events in our universe?

The third article titled “The Four Best Places for Life in Our Solar System” by Nicole Mortillaro provides a summary of four potential places for finding life. These planets and moons include Mars, Europa, Enceladus, and Titan (Mortillaro). This article outlines the requirements currently used to determine the feasibility of life on other planets. Question: Why did NASA restrict itself to studying Mars instead of sending a drone on one of the moons?

The fourth article written by Mike Wall speaks of the protective gravitational barrier of our solar system, which filters out charged particles coming from outside of the solar system. The existence of this protective field makes life on Earth possible (Wall). Studying it would help determine which systems can potentially harbor life and which could not. Question: Is the gravitational barrier unique to the Solar system alone?

The fifth article written by Lisa Kaspin-Powell explores the potential of non-H2O-based lifeforms existing on Titan. The article informs the readers that the elements found in Titan’s atmosphere can form cellular membranes similar to phospholipid molecular chains (Kaspin-Powell). Question: What other elements could potentially form cellular membranes?

The last article written by Seth Shostack provides a list of eight planets within the scope of our solar system that has the potential of harboring life. Aside from the 4 candidates mentioned in the article by Mortillaro, the article adds Earth, Venus, Ganymede, and Callisto, which show gravitational signs of possessing underground water (Shostak). Question: How is gravity related to the presence or absence of water?

Works Cited

Fendrihan, Sergiu. “The Extremely Halophilic Microorganisms, A Possible Model for Life on Other Planets.” Current Trends in Natural Sciences, vol. 6, no. 12, 2017, pp. 147-151.

Kaspin-Powell, Lisa. “Does Titan’s Hydrocarbon Soup Hold a Recipe for Life?” Astrobiology Magazine . 2018. Web.

Mortillaro, Nicole. “ The Four Best Places for Life in Our Solar System .” Global News . 2014. Web.

Redd, Nola Taylor. “ Life on Mars: Exploration and Evidence. ” Space. 2017. Web.

Shostak, Seth. “ 8 Worlds Where Life Might Exist. ” Space. 2006. Web.

Specktor, Brandon. “ Aliens May Well Exist in a Parallel Universe, New Studies Find. ” Space. 2018. Web.

Wall, Mike. “ NASA Will Launch a Probe to Study the Solar System’s Protective Bubble in 2024. ” Space. 2018. Web.

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IvyPanda. (2023, December 13). Life on Other Planets. https://ivypanda.com/essays/life-on-other-planets/

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IvyPanda . 2023. "Life on Other Planets." December 13, 2023. https://ivypanda.com/essays/life-on-other-planets/.

1. IvyPanda . "Life on Other Planets." December 13, 2023. https://ivypanda.com/essays/life-on-other-planets/.

Bibliography

IvyPanda . "Life on Other Planets." December 13, 2023. https://ivypanda.com/essays/life-on-other-planets/.

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Essay on Save Earth: Samples in 100, 150 and 200 Words

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  • Nov 11, 2023

Essay On Save Earth

There is a popular saying that goes, ’You don’t bite the hand that feeds you. Well, then why harm the planet that is providing for you?’ We all should know that our planet Earth is the only planet where life can exist. Our planet provides us with basic necessities such as water, air, food to eat, and much more. So if you want to save our planet Earth for yourself and for the coming future generations then do give this blog a read. Today we will be talking about how you can save your planet Earth by taking all the required measures. We have also listed some sample essay on Save Earth which will help you to talk about the same in public. 

write an essay on the planets

Table of Contents

  • 1 Why is Saving Earth so Important?
  • 2 Essay on Save Earth in 100 Words
  • 3 Essay on Save Earth in 150 Words
  • 4 Essay on Save Earth in 200 Words

Why is Saving Earth so Important?

Our planet Earth is the only planet that provides us with raw materials, oxygen, food which we need for fuel, and other essential materials.  

There are a number of reasons why saving the Earth is so important:

  • Our Earth is the only planet that supports life. Despite signs of organic molecules and water on other planets and moons, life is only known to exist on Earth. There would be nowhere else for us to go if not Earth.
  • Our Earth provides us with basic necessities such as medicine, food, clean water, and air to breathe. 
  • The combustion of fossil fuels releases harmful greenhouse gases into the atmosphere, which traps heat and warms the earth. Rising sea levels, melting glaciers, and more extreme weather events are just a few of the negative effects of climate change that are already being felt.

Also Read: Essay on Social Issues

Essay on Save Earth in 100 Words

The only planet in the cosmos that is known to sustain life is Earth. Since it is our home, we must take care of it.

There are numerous reasons why protecting the planet is crucial. To begin with, it is our only place of residence. There won’t be somewhere else for us to go if we destroy Earth. Second, Earth gives us food, water, air, and shelter—everything we require to survive. Third, a wide variety of biodiversity exists on Earth, which is vital to human health.

Unfortunately, the health of Earth is being threatened by human activity. Among the difficulties we confront are deforestation, pollution, and climate change.

To save the Earth, we can all do our part. Here are some actions you may take:

  • Cut back on the use of fossil fuels. Make more of an effort to walk or bike, drive less, and take public transit wherever you can.
  • Make the switch to alternative energy sources like wind and solar energy.
  • At home, use less energy and water.
  • Reduce trash via composting and recycling.
  • Encourage companies and groups that are engaged in environmental protection.

Both our own life and the survival of future generations depend on saving the planet. We can contribute to ensuring that our planet is healthy and habitable for many years to come by acting now.

Also Read: Essay on Save Environment: Samples in 100, 200, 300 Words

Essay on Save Earth in 150 Words

Since the Earth is our home, it is up to us to preserve it. However, the health of the planet is in danger due to human activity. Among the difficulties we confront are deforestation, pollution, and climate change.

The most important environmental issue of our day is climate change. Greenhouse gases are released into the atmosphere, which causes the earth to warm. Among the detrimental repercussions of climate change that are already being felt are rising sea levels, melting glaciers, and an increase in extreme weather occurrences.

Pollution poses a serious threat to Earth as well. Among the materials we use to damage the air, water, and land are chemicals, plastics, and trash. Not only can pollution harm humans and wildlife, but it can also ruin ecosystems.

Deforestation is another issue. In this, the trees are removed and instead, buildings are constructed.  Forests filter water in addition to providing habitat for species and regulating the climate. Deforestation is one of the primary causes of both climate change and biodiversity loss.

We must take action to safeguard Earth from these threats. We can potentially reduce our carbon footprint by switching to renewable energy sources and consuming less energy. We can also reduce pollution by using less plastic, recycling, and composting. We can also safeguard forests by planting trees and promoting sustainable forestry practices.

Preserving the planet is essential for our own existence as well as that of future generations. To keep our world safe, each of us has a responsibility.

Also Read: Essay on Unity in Diversity in 100 to 200 Words

Essay on Save Earth in 200 Words

The only planet in the solar system where humanity can survive is Earth. Since our planet gives us access to fundamental essentials like clean water, fresh air, and food to eat, it is our duty as humans to make sure that it is habitable for future generations.

We can see that, among all the urgent problems, one of the most significant ones that affect humanity is climate change. Among the detrimental repercussions of climate change that are already being felt are rising sea levels, melting glaciers, and an increase in extreme weather occurrences.

Pollution is another major problem. The majority of the materials that are key to pollution of the air, water, and land are harmful chemicals, plastics that are carelessly thrown away, and other materials. This is not only harmful to humans and wildlife but also to the environment. 

Deforestation is the third main issue; it is the removal of trees for construction or other purposes, like agriculture. One of the main contributors to both climate change and biodiversity loss is deforestation. Consequently, we need to act to defend Earth from these dangers. 

We hope this essay on Save Earth helped you with some knowledge of some of the pressing issues we face on a daily basis and what we can do to save our planet. 

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We can conserve the globe by avoiding contamination of the Earth and its natural resources, including the air and water.

Reducing carbon emissions is the first step towards saving our planet. This can be done by using environmentally friendly resources, conserving water and following the Reduce, Reuse and Recycling practices.

Clearing forest areas for agricultural, human settlement or any other commercial activities is known as deforestation.

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Life on Other Planets: What is Life and What Does It Need?

Against a background of deep space, we see in this illustration a green and brown, rocky planet In the lower right foreground, its star – a red dwarf – in the distance to the planet’s upper left. That side of the planet is brightly illuminated while the rest is slightly shadowed. Other planets in this system can be seen at various points to the planet’s far left, lower near left, and upper near-right.

One day, perhaps in the not-too-distant future, a faraway planet could yield hints that it might host some form of life – but surrender its secrets reluctantly.

Our space telescopes might detect a mixture of gases in its atmosphere that resembles our own. Computer models would offer predictions about the planet’s life-bearing potential. Experts would debate whether the evidence made a strong case for the presence of life, or try to find still more evidence to support such a groundbreaking interpretation.

“We are in the beginning of a golden era right now,” said Ravi Kopparapu, a scientist at NASA’s Goddard Space Flight Center in Greenbelt, Maryland, who studies habitable planets. “For the first time in the history of civilization we might be able to answer the question: Is there life beyond Earth?”

For exoplanets – planets around other stars – that era opens with NASA’s James Webb Space Telescope. Instruments aboard the spacecraft are detecting the composition of atmospheres on exoplanets. As the power of telescopes increases in the years ahead, future advanced instruments could capture possible signs of life – “biosignatures” – from a planet light-years away.

Within our solar system, the Perseverance rover on Mars is gathering rock samples for eventual return to Earth, so scientists can probe them for signs of life. And the coming Europa Clipper mission will visit an icy moon of Jupiter. Its goal: to determine whether conditions on that moon would allow life to thrive in its global ocean, buried beneath a global ice shell.

But any hints of life beyond Earth would come with another big question: How certain could any scientific conclusions really be?

“The challenge is deciding what is life – when to say, ‘I found it,’” said Laurie Barge of the Origins and Habitability Lab at NASA’s Jet Propulsion Laboratory in Southern California.

With so much unknown about what even constitutes a “sign of life,” astrobiologists are working on a new framework to understand the strength of the evidence. A sample framework, proposed in 2021, includes a scale ranging from 1 to 7, with hints of other life at level 1, to increasingly substantial evidence, all the way to certainty of life elsewhere at level 7. This framework, which is being discussed and revised, acknowledges that scientific exploration in the search for life is a twisted, winding road, rather than a straightforward path.

And identifying definitive signs remains difficult enough for “life as we know it.” Even more uncertain would be finding evidence of life as we don’t know it, made of unfamiliar molecular combinations or based on a solvent other than water.

Still, as the search for life begins in earnest, among the planets in our own solar system as well as far distant systems known only by their light, NASA scientists and their partners around the world have some ideas that serve as starting points.

Life That Evolves

First, there’s NASA’s less-than-formal, non-binding but still helpful working definition of life: “A self-sustaining chemical system capable of Darwinian evolution.” Charles Darwin famously described evolution by natural selection, with characteristics preserved across generations leading to changes in organisms over time.

Derived in the 1990s by a NASA exobiology working group, the definition is not used to design missions or research projects. It does help to set expectations, and to focus debate on the critical issues around another thorny question: When does non-life become life?

“Biology is chemistry with history,” says Gerald Joyce, one of the members of the working group that helped create the NASA definition and now a research professor at the Salk Institute in La Jolla, California.

That means history recorded by the chemistry itself – in our case, inscribed in our DNA, which encodes genetic data that can be translated into the structures and physical processes that make up our bodies.

The DNA record must be robust, complex, self-replicating and open-ended, Joyce suggests, to endure and adapt over billions of years.

“That would be a smoking gun: evidence for information having been recorded in molecules,” Joyce said.

Such a molecule from another world in our solar system, whether DNA, RNA or something else, might turn up in a sample from Mars, say from the Mars sample-return mission now being planned by NASA.

Or it might be found among the “ocean worlds” in the outer solar system – Jupiter’s moon, Europa, Saturn’s Enceladus or one of the other moons of gas giants that hide vast oceans beneath shells of ice.

We can’t obtain samples of such information-bearing molecules from planets beyond our solar system, since they are so far away that it would take tens of thousands of years to travel there even in the fastest spaceships ever built. Instead, we’ll have to rely on remote detection of potential biosignatures, measuring the types and quantities of gases in exoplanet atmospheres to try to determine whether they were generated by life-forms. That likely will require deeper knowledge of what life needs to get its start – and to persist long enough to be detected.

A Place Where Life Emerges

There is no true consensus on a list of requirements for life, whether in our solar system or the stars beyond. But Joyce, who researches life’s origin and development, suggests a few likely “must-haves.”

Topping the list is liquid water. Despite a broad spectrum of environmental conditions inhabited by living things on Earth, all life on the planet seems to require it. Liquid water provides a medium for the chemical components of life to persist over time and come together for reactions, in a way that air or the surface of a rock don’t do as well.

Spectroscopy_of_exoplanet

Also essential: an energy source, both for chemical reactions that produce structures and to create “order” against the universal tendency toward “disorder” – also known as entropy.

An imbalance in atmospheric gases also might offer a tell-tale sign of the presence of life.

“In Earth’s atmosphere, oxygen and methane are highly reactive with each other,” Kopparapu said. Left to themselves, they would quickly cancel each other out.

“They should not be seen together,” he said. “So why are we seeing methane, why are we seeing oxygen? Something must be constantly replenishing these compounds.”

On Earth, that “something” is life, pumping more of each into the atmosphere and keeping it out of balance. Such an imbalance, in these compounds or others, could be detected on a distant exoplanet, suggesting the presence of a living biosphere. But scientists also will have to rule out geological processes like volcanic or hydrothermal activity that could generate molecules that we might otherwise associate with life.

Careful laboratory work and precision modeling of possible exoplanet atmospheres will be needed to tell the difference.

Going Through Changes

Barge also places high on the list the idea of “gradients,” or changes that occur over time and distance, like wet to dry, hot to cold, and many other possible environments. Gradients create places for energy to go, changing along the way and generating molecules or chemical systems that later might be incorporated into life-forms.

Plate tectonics on Earth, and the cycling of gases like carbon dioxide – buried beneath Earth’s crust by subduction, perhaps, or released back into the atmosphere by volcanoes – represent one kind of gradient.

Barge’s specialty, the chemistry of hydrothermal vents on the ocean floor billions of years ago, is another. It’s one possible pathway to have created a kind of primitive metabolism – the translation of organic compounds into energy – as a potential precursor to true life-forms.

“What gradients existed before life?” she asks. “If life depends so much on gradients, could the origin of life also have benefited from these gradients?”

Clearer mapping of possible pathways to life ultimately could inform the design of future space telescopes, tasked with parsing the gases in the atmospheres of potentially habitable exoplanets.

“If we want to be sure it’s coming from biology, we have to not only look for gases; we have to look at how it’s being emitted from the planet, if it’s emitted in the right quantities, in the right way,” Kopparapu said. “With future telescopes, we’ll be more confident because they’ll be designed to look for life on other planets.”

Search for Life

This article is one in a series about how NASA is searching for life in the cosmos.

Beginnings: Life on Our World and Others

The Hunt for Life on Mars – and Elsewhere in the Solar System

'Life' in the Lab

Searching for Signs of Intelligent Life: Technosignatures

Finding Life Beyond Earth: What Comes Next?

An illustration in a style similar to a National Parks poster shows a rocky shoreline in the foreground, an expanse of water lapping against it and, on the horizon, the cone of a volcano releasing a white cloud of gas against a sky with dusky light.

Related Terms

  • Terrestrial Exoplanets
  • The Search for Life

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Humans aren’t the only mammals working to mitigate the effects of climate change in the Western United States. People there are also enlisting the aid of nature’s most prolific engineers – beavers. Using NASA-provided grants, two open-source programs from Boise State University in Idaho and Utah State University in Logan are making it possible for […]

write an essay on the planets

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Students Celebrate Rockets, Environment at NASA’s Kennedy Space Center

At NASA’s Kennedy Space Center, sustainability and preservation efforts here on Earth are as much of a priority as rocket launches, spacecraft, and the exploration of worlds beyond our own. In celebration of Earth Day 2024, nearly 100 students from Andrew Jackson Middle School in Titusville, Florida, and a virtual audience of students across the […]

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Black Holes

write an essay on the planets

write an essay on the planets

The beginnings of modern science shaped how philosophers saw alien life – and how we understand it today

write an essay on the planets

Emeritus Professor in the History of Religious Thought, The University of Queensland

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Philip C. Almond does not work for, consult, own shares in or receive funding from any company or organisation that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.

University of Queensland provides funding as a member of The Conversation AU.

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Speculation about extraterrestrials is not all that new. There was a vibrant debate in 17th-century Europe about the existence of life on other planets.

This was the consequence of the transition from a Ptolemaic view , in which Earth was at the centre of the universe and everything revolved around it, to a Copernican view in which the Sun was at the centre and our planet, along with all the others, revolved around it.

It followed that if we were now more like other planets and moons close to us that revolved around the Sun, then they were more like Earth. And if other planets were like Earth, then they most likely also had inhabitants.

Robert Burton’s remarks in his The Anatomy of Melancholy (1621) were common:

If the Earth move, it is a Planet, and shines to them in the Moone, and to the other Planitary inhabitants, as the Moone and they doe to us upon the Earth.

Similarly, the Dutch astronomer Christiaan Huygens (1629–95) believed life on other planets was a consequence of the Sun-centred view of Copernicus. But his speculation on such matters proceeded from the doctrine of the “ divine plenitude ”. This was the belief that, in his all-powerfulness and goodness, having created matter in all parts of the universe, God would not have missed the opportunity to populate the whole universe with living beings.

In his The Celestial Worlds Discover’d (1698), Huygens suggested that, like us, the inhabitants of other planets would have hands, feet and an upward stance. However, in keeping with the greater size of other planets, particularly Jupiter and Saturn, they might be much larger than us. They would enjoy social lives, live in houses, make music, contemplate the works of God, and so on.

Others were much less confident in speculating on the nature of alien lives. Nevertheless, as Joseph Glanvill, a member of the Royal Society alongside Isaac Newton, suggested in 1676, even though details of life on other planets were unknown, this did not prejudice “the Hypothesis of the Moon’s being habitable; or the supposal of its being actually inhabited”.

write an essay on the planets

That other worlds were inhabited also seemed an appropriate conclusion to draw from early modern science focused, as it was, on God’s work in nature.

write an essay on the planets

This was a theme developed at length by the most influential work on the plurality of worlds in the latter part of the 17th century, the Copernican Bernard Fontenelle’s Entretiens sur la pluralité des mondes (Conversations on the Plurality of Worlds, 1686).

To Fontenelle, there was an infinite number of planets and an infinite number of inhabited worlds. For him, this was the result of the analogy, as a consequence of Copernicanism, between the nature of our Earth and that of other worlds.

But it was also the result of the fecundity of the divine being from whom all things proceed. It is this idea “of the infinite Diversity that Nature ought to use in her Works” which governs his book, he declared.

Read more: Chariots of the gods, ships in the sky: how unidentified aerial phenomena left their mark in ancient cultures

The seed of Adam

But there was a significant problem. If there were intelligent beings on the Moon or the planets, were they “men”? And, if they were, had they been redeemed by the work of Jesus Christ as people on Earth had been?

John Wilkins (1614–72), one of the founders of the new science, wrestled with the theological implications of the Copernican universe. He was convinced the Moon was inhabited. But he was quite uncertain whether the lunar residents were of “the seed of Adam”.

Wilkins’s simple solution was to deny their human status. The inhabitants of the Moon, he suggested in his The Discovery of a World in the Moone (1638), “are not men as wee are, but some other kinde of creatures which beare some proportion and likenesse to our natures”.

write an essay on the planets

In the end, Fontenelle was also to adopt this solution. It would be “a great perplexing point in Theology,” he declared, should the Moon be inhabited by men not descended from Adam. He only wished to argue, he wrote, for inhabitants “which, perhaps, are not Men”.

The existence of aliens – human, just like us – threatened the credibility of the Christian story of the redemption of all humans through the life, death and resurrection of Jesus Christ. This was intellectual space in which only the theologically brave – or foolish – dared to travel.

It was much easier to reject the humanity of the alien. Thus, our modern belief that aliens are not like us originated as the solution to a theological problem. They became “alien”, literally and metaphorically. And, therefore, threatening and to be feared.

A product of the divine?

We no longer live in a universe that is seen as the product of the divine plenitude. Nor one in which our planet can be viewed as the centre of the universe. As a result, ironically, we have become aliens to ourselves: modern “alienation” is that sense of being lost and forsaken in the vast spaces of a godless universe.

In the early modern period, aliens were not looked upon as threatening to us. They were, after all (even if they were not “men”), the product of divine goodness. But, in the modern world, they both personify and externalise the threat to our personal meaning, one that results from our being in a world without ultimate meaning or purpose.

As projections of our own alienation, they terrify us, even as they continue to fascinate us.

Read more: For 600 years the Voynich manuscript has remained a mystery. Now we think it's partly about sex

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Exoplanet Exploration: Planets Beyond Our Solar System

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Published: Jan 29, 2019

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