Facts about the solar system with the crucial information


Most of us know many things about the solar system but none of us know everything and facts about the solar system. I think it’s really important for us to know as much as possible at least about our solar system. So in this article, we are going to discuss the solar system in as much depth as possible. What usually comes to people’s minds when they hear about the solar system is the sun and the eight planets. But it is not just about the sun and planets, there are many more things that the solar system consists of like asteroid belt, dwarf planets, icy bodies, Kuiper belt, etc. There are so many interesting facts about the solar system that you will be amazed to know. So let’s start our journey of the solar system.

Credit: NASA – Our Solar System Galleries

Our solar system

A star due to its mass generates a high force of gravity. That force of gravity helps in binding the planets in a particular orbit. Orbit refers to the path in which a particular planet revolves around the star. Our solar system consists of the sun and the family of eight planets along with the other bodies trapped in orbit around it. As per scientific research, our sun is formed from a huge cloud of gas and dust. The process of formation of our sun takes place nearly 4.6 billion years ago.

After the formation of a star from the huge cloud of gas and dust only a small fraction of mass, nearly 0.14 percent, encircles the star in the form of a fast-spinning disk. Now this revolving matter which is in the form of small grains clumps together over time to form planets. This matter clumps and forms a shape that is nearly a sphere due to its gravity.

What does solar system consist

Many secrets and facts about the solar system are there that we don’t know. Many things are still waiting to be discovered. In the inner part of the solar system where the heat is very intense for gases to condense. So the planets formed in this region are made up of rocks and metals. Whereas in the outer region of the solar system where heat is not so high gases and liquid condensed to form much bigger planets. Today our solar system consists of 8 planets, more than 100 moons, many dwarf planets, and millions of comets and asteroids.

The planets of our solar system form two groups. Four inner planets are small in size and made up of metal and rock. While there are four outer planets in our solar system which are giant and made up of gas and liquid. Between these outer and inner planets, there is a belt of rocky bodies. These rocky bodies are known as asteroids. Beyond the planets, there is a zone that consists of icy bodies. These icy bodies include dwarf planets and comets.

Overview of objects in the solar system

Here we are going to discuss the things that the solar system consists of. We are providing here only the preview of them with some facts about them and the solar system. So they are as follows :

Inner planets

Sun: as we already know that the sun is the only star in our solar system. It is like a vast nuclear power station since it produces energy by nuclear reaction. In a nuclear reaction, the conversion of hydrogen atoms into helium atoms takes place.

Mercury: Mercury is the closest planet to the Sun. It is also the smallest planet among the nine planets of our solar system. There are signs of ancient craters on its surface.

Venus: Its size is almost similar to the earth. But its surface is too hot. If an astronaut visited Venus then it would be crushed and boiled alive.

Earth: It is the only planet in the solar system which supports life. Life on the earth is possible due to liquid water on its surface.

Mars: It has bitterly cold temperatures and its surface is like a desert. Like Earth, Mars also has mountains, canyons, and icy poles.

Asteroid belt: Asteroids are giant space rocks smaller than dwarf planets. They drift around the inner solar system. Most of the asteroids lie between Mars and Jupiter. But some of them occasionally come dangerously close to the Earth. Their size varies from the size of a house to the size of a dwarf planet. Scientists think that they are the leftovers of materials after the formation of planets. If you take the mass of all Asteroids together then it comes to be less than a twentieth of the Moon’s mass.

Outer planets

Jupiter: Jupiter is the largest planet in our solar system. If we put together the mass of all the remaining eight planets then it comes to be less than the mass of Jupiter. Jupiter also has a family of 67 moons, among them some are as big as the planets.

Saturn: It is the second biggest planet in our solar system. Saturn has a dazzling system of bright rings that encircle it. It also has 62 moons and dozens of moonlets.

Uranus: It is a blue giant. Uranus orbits the sun tipped over on its side, perhaps because of a crash with a smaller material. It also has 27 moons revolving around it.

Comets: They are icy bodies. Comets can develop a tail of gas and dust when they approach the sun.

Neptune: It is the most distant planet from the sun. This planet is a blue giant and it has 13 known moons. Neptune takes 164 years to orbit the Sun once.

Kuiper belt: Many icy bodies numbered up to thousands and millions occupy the region beyond the planets. The Kuiper belt is the home of the dwarf planet Pluto. It is also a likely source of comets.


Every major body in the solar system revolves around the sun in an anticlockwise direction. The planets revolve around the sun in a nearly circular orbit in the same plane. Many small objects like dwarf planets Pluto and Eris revolve in a tilted plane as compared to the plane in which planets revolve. And if we talk about comets then they arrive from every direction.

How do orbits work? Issac Newton, an English scientist, was the first person who gave a theory about why moons and planets travel in orbits. According to him, gravity trapped them in an orbit. To explain his Theory he gave an example of cannonballs. He said if a cannonball moves fast enough so that it can escape earth’s gravity. Then just at the right speed it keeps falling but never going to land on earth and Cannonball stays in orbit.

Facts about the solar system

Here we are going to discuss some interesting facts about the solar system. These facts will amaze you and they are as follows:

  • Pluto, which is the most famous dwarf planet, was considered a planet till 2006.
  • If we consider the sun as the size of a basketball then the earth would be a pee 83 meters away.
  • If we consider the sun as the size of a basketball then Neptune would be a strawberry 270 km away.
  • 26 is the number of asteroids known to be more than 200 km wide.
  • Mercury, which is closer to the sun, is not the hottest planet. The hottest planet is Venus.
  • Most of us think that the solar system is only up to Pluto but it’s not true. The edge of the solar system is 1,000 times farther away than Pluto. The edge is nearly half of the light-year from the sun.
  • Some Mars rock was found on the earth’s surface and interestingly we didn’t bring them here. This may be due to a huge volcanic eruption or due to a large Asteroid impact on Mars. Mars also has tremendous volcanoes on its surface.
  • Jupiter has the biggest ocean of any planet and this ocean is made up of hydrogen.
  • It’s really interesting to know that we live inside the sun’s atmosphere. The sun’s atmosphere covers an area of nearly 16 billion km (10 billion miles).


Ques 1. Why is Venus the hottest planet not Mercury?

Ans. Mercury is the closest planet to the sun. So it must be the hottest planet of our solar system but it is not so. Since Mercury doesn’t have any atmosphere. Also, the main reason behind Venus being the hottest planet in our solar system is its atmosphere. The atmosphere of Venus is 100 times thicker than the atmosphere of the earth plus its atmosphere is mostly made up of carbon dioxide ( CO2). As we already know that CO2is a greenhouse gas and it resists the escape of sunlight when it bounces back from the surface. These all factors make Venus the hottest planet with an average temperature of 468 degrees Celsius (875 degrees Fahrenheit). Also, the average temperature of mercury is 427 degrees Celsius (800 degrees Fahrenheit).

Ques 2. How is the solar system formed and why is the solar system important to us in our everyday living?

Ans. After the formation of the sun from the huge cloud of gas and dust, some small fraction material remains.  That small fraction of material starts revolving around the sun in the form of a fast-spinning disc. That material is in the form of small grains that then start to accumulate till they form a planet. Then these planets start revolving around the star or sun. That is how our solar system formed 4.6 billion years ago.
The solar system is important to us in our everyday living because every activity and event that occurs in it affects our lives. Also without it, our existence is not possible on the earth.

Ques 3. Name the smallest and largest planet of our solar system?

Ans. Mercury is the closest planet to the Sun. It is also the smallest planet among the nine planets of our solar system. Jupiter is the largest planet in our solar system. If we put together the mass of all the remaining eight planets then it comes to be less than the mass of Jupiter

Ques 4. Where is our solar system located and why is it called the solar system only?

Ans. Our solar system is located in the outer arms of the milky way galaxy. That arm is known as the Orion Arm. 
The reason behind the name being a solar system is that we call the sun as ‘sol’ as the Latin word for sun is ‘solis’. Also, we call anything related to them ‘solar’. 

Ques 5. Where is the asteroid belt located in our solar system?

Ans. The asteroid belt is located between Mars and Jupiter.

Ques 6. Did we live inside the sun’s atmosphere?

Ans. Yes, we live inside the sun’s atmosphere. As the sun’s atmosphere covers an area of nearly 16 billion km (10 billion miles). Also, everything like planets, asteroids, dwarf planets, icy bodies, etc., is located within this area.

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