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 validated. 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 dropdown menu or by selecting one from the list underneath the dropdown menu. This category contains Solar System related topics, such as the Sun, planets, the asteroid belt, and the Kuiper belt. Many of these topics have additional sub-topics when necessary. For example, our Mars topic 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.
Select a Solar System Facts Section
Asteroid Belt Facts
This section is all about the Asteroid Belt. Discover some cool facts about the Asteroid Belt, such as what is the Asteroid Belt, how big it is, how far away it is and other facts about the Asteroid Belt.
Earth Facts
This section is all about the planet Earth. Discover some out of this world facts about Earth, such as when did the planet form, how big Earth is and other facts about the planet Earth.
Halley's Comet Facts
This section is all about Halley's Comet. Discover some amazing facts about Halley's Comet, such as what is Comet Halley, how often does it visit Earth and other facts about Halley's Comet.
Inner Planets Facts
This section is all about the inner planets. Discover some amazing facts about the inner planets, such as what are the inner planets, what are the inner planets made out of and other inner planet facts.
Jupiter Facts
This section is all about the planet Jupiter. Discover some out of this world facts about Jupiter, such as when did the planet form, how big Jupiter is and other facts about the planet Jupiter.
Kuiper Belt Facts
This section is all about the Kuiper Belt. Discover some interesting facts about the Kuiper Belt, such as what is the Kuiper Belt, how big it is, how far away it is and other facts about the Kuiper Belt.
Mars Facts
This section is all about the planet Mars. Discover some out of this world facts about Mars, such as when did the planet form, how big Mars is and other facts about the planet Mars.
Mercury Facts
This section is all about the planet Mercury. Discover some out of this world facts about Mercury, such as when did the planet form, how big Mercury is and other facts about the planet Mercury.
Moon Facts
This section is all about the Moon. Discover some bright facts about the Moon, such as when did the Moon form, how big is the Moon, what are the phases of the Moon and other facts about the Moon.
Neptune Facts
This section is all about the planet Neptune. Discover some out of this world facts about Neptune, such as when did the planet form, how big Neptune is and other facts about the planet Neptune.
Oort Cloud Facts
This section is all about the Oort Cloud. Discover some awesome facts about the Oort Cloud, such as what is the Oort Cloud, how big it is, how far away it is and other facts about the Oort Cloud.
Outer Planets Facts
This section is all about the outer planets. Discover some amazing facts about the outer planets, such as what are the outer planets, what are the outer planets made out of and other outer planet facts.
Pluto Facts
This section is all about the dwarf planet Pluto. Discover some out of this world facts about Pluto, such as why was it demoted, when did it form, how long it takes to orbit the Sun and other Pluto facts.
Saturn
This section is all about the planet Saturn. Discover some out of this world facts about Saturn, such as when did the planet form, how big Saturn is and other facts about the planet Saturn.
Solar System Facts
This section is all about our Solar System. Discover some cool facts about our Solar System, such as when did it form, what planets are in our Solar System and other facts about our Solar System.
Sun Facts
This section is all about the Sun. Discover some bright facts about the Sun, such as when did the Sun form, how big is the Sun, how hot does the Sun get and other facts about our Sun.
Uranus Facts
This section is all about the planet Uranus. Discover some out of this world facts about Uranus, such as when did the planet form, how big Uranus is and other facts about the planet Uranus.
Venus Facts
This section is all about the planet Venus. Discover some out of this world facts about Venus, such as when did the planet form, how big Venus is and other facts about the planet Venus.
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 on one of the 205 moons throughout our Solar System.