Essay on solar system

Our solar system consists of one sun, eight planets, satellites, dwarf planets, asteroids, meteorites and comets. The eight planets are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune. Earlier it had nine planets. However, the ninth planet, Pluto, does not meet the latest standards set for planets. It is now called a dwarf planet, bringing the number of dwarf planets in our solar system to five.

Essay on solar system (200 words)

The universe is vast. It is much larger than we can imagine and our solar system is a small part of it. Our solar system is a big, bright star called the Sun. The Sun is a rich source of electromagnetic energy that it emits in the form of light and heat.

There are eight planets in our solar system such as Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune. These planets orbit the Sun in a fixed path known as orbit. Many other small objects also revolve around the Sun.

Many of the planets in our solar system have natural satellites called moons. While Earth has one moon, Mars has two, Neptune has 14 moons, Uranus has 27 moons, Saturn has 62 moons and Jupiter has 79 moons. Even the dwarf planet Pluto has 5 moons. On the other hand, Mercury and Venus have no moon. Just as planets revolve around the Sun in a certain path, similarly the Moon revolves around its planets.

In addition to the sun, planets and moons, our solar system includes many other celestial bodies called comets, asteroids, and meteorites. While there is only one star in our solar system, many other solar systems are known to have at least two stars.

Essay on solar system (300 words)

Preface :

Our solar system was formed billions of years ago. It includes many celestial bodies including planets, satellites, asteroids, comets, meteorites, and a giant star. Our solar system is a part of the Milky Way Galaxy. Various celestial bodies of our solar system orbit the Sun directly or indirectly.

Formation of Solar System:

It is believed that about 4.6 billion years ago, the gravitational collapse of a massive interstellar molecular cloud shaped our solar system. The bulk of the broken mass collided in the center, forming the Sun. The remaining mass was leveled into a proto planetary disk and formed planets, satellites, and other objects in the solar system. The largest planet in our solar system, the planet Jupiter, forms the major part of the remaining mass.

Our solar system is believed to have developed greatly since its inception. Many new moons have come in shape from gases and dust around the planets. Numerous collisions have also occurred between celestial bodies and are still continuing, contributing to the development of the solar system.

Planetary Discovery:

For thousands of years astronomers believed that the Earth was stationary and became the center of the universe. It was in the 18th century that astronomers acknowledged that the Earth revolved around the Sun. In the second millennium BCE, Mercury, Venus, Mars, Jupiter and Saturn were identified by astronomers of ancient Babylonian.

Later, Nicholas Copernicus also recognized him. Uranus was discovered in 1781 by the famous astronomer, Sir William Herschel. Neptune was discovered in the year 1846 by the English astronomer and mathematician, John Cauch Adams. It was in 1930 that the ninth planet Pluto was discovered. Astronomer Clyde Tombag discovered Pluto which is now recognized as a dwarf planet.


The study of the universe and heavenly bodies is one of the most fascinating studies. Through continuous research, astronomers have discovered many startling facts about the universe and our solar system. Our solar system is always evolving and new facts are being discovered and studied year after year by researchers.

Essay on solar system in hindi (400 words)


Celestial bodies are objects that are found naturally in the observable universe. These include stars, natural satellites, planets, asteroids, galaxies, comets and meteorites. Our solar system consists of one sun, eight planets with their moon, five dwarf planets and asteroids among other celestial bodies. A brief description of each celestial body in our solar system is given below.

Sun :

The Sun is the only star in our solar system. It is stable and other objects of our solar system revolve around it. It is the largest component of our solar system. Research says that it comprises 99.86% of the entire mass of our solar system.

Planets :

There are eight planets in the solar system. These are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune. The planets are divided into two groups – terrestrial planets and giant planets. Planets vary depending on their size, geological characteristics, mass, number of satellites and various other factors. No traces of life have been found on any planet other than Earth.

Dwarf Planet:

There are five dwarf planets in our solar system. These are Pluto, Ceres, Humia, Eris and Makemake. While Ceres is located in the asteroid belt, others are located in the outer solar system. Dwarf planets are like full-sized planets. The only difference is that full-sized planets have cleaned objects in their orbit area while dwarf planets have not.

Astronomers claim that there are six other objects in our solar system that are similar to dwarf planets. These can be officially identified as dwarf planets in the coming times.

The Moons:

According to a research conducted in the year 2008, there are total 193 moons in our solar system. Of these, 185 moons revolve around full size planets and 8 moons revolve around dwarf planets. Moons come in various shapes and sizes. They differ from each other in different ways. Most moons are airless.

However, there are others who have an atmosphere. Some also have hidden oceans. Each planet has different numbers of moons. Earth has only one moon while Jupiter has the largest number of moons. It has a total of 79 moons. The moons revolve around their respective planets.


Apart from the above, there are many other celestial bodies in our solar system. These include the Interplanetary Medium, the Kuiper Belt, the Oort Cloud, the asteroid, and the meteorite. The Kuiper Belt and Oort Cloud contain billions of icy objects. Each celestial body in our solar system is unique with its own characteristics.

Essay on solar system (500 words)

Preface :

Our solar system is huge but nothing compared to the size of the universe. The universe is humble and is believed to contain many solar systems, including many planets, stars, and other heavenly bodies. The universe is all space and time and it is not possible to calculate its spatial size. The size of the observable universe is believed to be 93 billion light years.

Galaxy and Solar System:

Research shows that like our solar system, there are many other solar systems in the universe. There are billions of galaxies in the universe. Each of these galaxies has uncountable stars and many of these stars have their own solar system. The size of stars, number of planets, geological features of planets, number and size of natural satellites vary from solar system to solar system.

Our solar system is a part of the Milky Way Galaxy. Milky Way Galaxy is huge. It has more than 100 billion stars. More than 2500 stars of planets orbiting their surroundings have been discovered in the Milky Way Galaxy. Studies are going on in this area continuously. There are many planetary systems that scientists and astronomers have yet to discover.

our solar system :

Our solar system surrounds the Sun which is a large circle of fire. The Sun is stable and the center of our solar system. The eight planets, Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune revolve around the Sun. Each of these planets move on a fixed path in their fixed speed.

The geological features of each of these planets are different. While Neptune is free from cold, Venus is hot. Similarly, while Jupiter is massively large, Mercury is comparatively much smaller in size. The planet is smaller than some of the moons of our solar system. The atmosphere of each planet is different.

The planets are divided into two groups and the characteristics of the planets within each group are also quite different. Earth is the only planet in our solar system known for life. It is filled with vast oceans and gases such as oxygen and nitrogen which provide life.

Mars is said to share some similarities with Earth. Evidence of ice has been found on the planet. The planet is extremely cold and thus life there seems impossible. However, it is believed that the planet was once wet and hot and life existed here.

Astronomers are studying this planet closely and have also found many interesting facts about it. The number of natural satellites in these planets is different. In addition, there are five dwarf planets in our solar system. These are Ceres, Houmeya, Makemake, Eris and Pluto. Previously there were nine planets in our solar system and Pluto was one of them. However, it is now called a dwarf planet.


The universe is vast and there is much to study and discover. Scientists have deeply studied our solar system for centuries and are now moving on to study other solar systems and galaxies. Many interesting facts about this enchanting universe are likely to be revealed in the coming time.

Essay on solar system (600 words)

Preface :

Our solar system consists of eight planets that revolve around the Sun, which is at the center of our solar system. These planets are broadly classified into two categories – inner planets and outer planets. There are four internal planets, Mercury, Venus, Earth and Mars. The inner planets are closer to the Sun and smaller in size than the outer planets.

They are also called terrestrial planets. Jupiter, Saturn, Uranus and Neptune are called outer planets. These are massive in size and are often referred to as giant planets.

Here is a brief information about each of these planets:

Mercury :

Mercury, the smallest planet in our solar system, is also closest to the Sun. Its geological features include lobed ridges and impact craters. Being closest to the Sun, Mercury has very high temperatures during the day. It can go up to 450 ° C. Surprisingly, the nights here chill with cold.

Mercury has a diameter of 4,878 km. It has no natural satellite.

Venus :

Venus is called the hottest planet in our solar system. It has a poisonous atmosphere which traps in the heat. It is also the brightest planet and is visible to the naked eye. It has a thick silicate layer around the iron core that is similar to the Earth. Astronomers have seen traces of internal geological activity on this planet.

Venus has a diameter of 12,104 km. Like Mars, Venus also has no natural satellite.

Earth :

Earth is the largest inner planet. Two-thirds of this planet is covered with water. It is the only planet in our solar system where life exists. Earth’s environment, which is rich in nitrogen and oxygen, is suitable for the survival of various species of flora and fauna.

However, human activities are having a negative impact on its environment. The diameter of the Earth is 12,760 km. It has a natural satellite, the Moon.

Planet Mars:

Mars, the fourth planet from the Sun, often called the Red Planet. The iron oxide present on this planet gives it a red color appeal. The planet is cold and has the same geological features as the Earth.

This is why it has caught the interest of astronomers like any other planet. Traces of frozen ice have been found on the planet. Mars has a diameter of 6,787 km and two natural satellites.


Jupiter is the largest planet in our solar system. It has a strong magnetic field. It mainly consists of helium and hydrogen. It has Great Red Spot and Cloud Band.

It is believed that a giant storm caused uproar here for hundreds of years. Jupiter has a diameter of 139,822 km and has 79 natural satellites.

Saturn planet:

Shani is known for the ring system. These rings are made of small particles of ice and rock. Its atmosphere is much like Jupiter because it is largely made up of hydrogen and helium. The diameter of Saturn is 120,500 km. It has 62 natural satellites made primarily of ice.


Uranus, the seventh planet from the Sun, is the lightest of all the giant, outer planets. It has a blue color due to the presence of methane in the atmosphere. Its core is colder than other giant planets. The planet orbits Uranus on its behalf and has a diameter of 51,120 km and 27 natural satellites.


The last planet in our solar system, Neptune is also the coldest. It is around the same size as Uranus, but much more massive and dense. Neptune’s atmosphere is made up of helium, hydrogen, methane, and ammonia.

It experiences extremely strong winds. It is the only planet in our solar system that is found by mathematical prediction. Neptune has a diameter of 49,530 km. It has 14 natural satellites.


Scientists and astronomers have been studying our solar system for centuries and the findings are quite interesting. The various planets that form a part of our solar system have their own distinct geological features and are different from each other in many ways.


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