Fast Facts for Kids
Solar System Facts for Kids, Parents and Teachers

Solar System Facts

Facts About the Solar System for Students, Parents and Teachers

Welcome to our Solar System Facts category, an online learning resource where you can learn about our Solar System. This category is perfect for students, teachers, parents, and anyone wanting to learn about the Solar System. We’re providing you with one of the largest collections of Solar System facts available on the internet. All the Solar System facts, data and information published to our website have been thoroughly researched and validate. However, no process is perfect, so if you do find any inaccuracies in our facts about the Solar System, please report it to us.

You can access all our Solar System related topics using the below drop down menu or by selecting one from the list underneath the down menu. This category contains Solar System related topics, such as the Sun, planets, asteroid belt and Kuiper belt. Many of these topics have additional sub-topics when necessary. For example, our Mars topics has several sub-topics, such as its moons Phobos (Mars I) and Deimos (Mars II). If we don’t currently cover the Solar System topic you’re looking for, contact us and request its addition.

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Our Solar System is in the Orion Arm of the Milky Way galaxy. It formed out of a giant interstellar molecular cloud around 4.6 billion years ago. Our Solar System is bound together by gravity from our Sun, a G-type main-sequence star. It has a total of eight planets. Four of those planets are known as the inner system planets and they are Mercury, Venus, Earth, and Mars. All four of the inner planets are terrestrial planets. The other four planets are part of the outer system planets, and they are Jupiter, Saturn, Uranus, and Neptune. Two of the outer system planets are gas giants (Jupiter and Saturn) and the other two outer system planets are ice giants (Uranus and Neptune). Our Solar System has 205 known natural satellites (moons). The planet with the most moons is Saturn and the planet with the least moons is tied between Mercury and Venus with none.

There are a lot of other things in our Solar System besides the eight planets, 200+ moons and the Sun. There is an area known as the Asteroid Belt that orbits between Mars and Jupiter. It is estimated that there are between 1.1 and 1.9 million asteroids in the Asteroid Belt with a diameter of at least 0.6 miles. Throughout our Solar System there are around 4,000 known comets with various orbits. Surrounding our entire Solar System is the Oort Cloud and estimated to contain trillions of objects with a diameter of at least 0.5 miles. Solar System is unique because it contains a planet called Earth, the only place in the universe where life is known to exist. It is estimated that life first appeared on Earth around 3.7 billion years ago. Other planets, like Venus and Mars, may have been able to sustain life millions of years ago. Life in theory could also exist one of the 205 moons throughout our Solar System.