In the Solar System Channel, you can explore the planets and celestial objects around our own sun. Learn about topics such as Mars, Jupiter and the Moon.
"Uranus is the third largest planet in the solar system, and is three times as large as Earth. Learn more about Uranus here." See more »
Venus is the second planet from the sun, and is about the same size as Earth. Learn more about Venus here. See more »
Saturn is the sixth planet from the sun and the second largest planet in the solar system. Learn more about Saturn here. See more »
Earth is the third planet from the sun, and the fifth largest. Learn more about our home planet here. See more »
Mars, which is the fourth planet from the sun and the third smallest in size, got its name because of its rusty red color. Read more here. See more »
How Mars Works
NASA's rover Spirit landed successfully on Mars over the weekend and sent a message to Earth, confirming a signal lock that allows the transfer of incredible data. Learn all about the Red Planet. See more »
How the Sun Works
The sun warms our planet every day, provides the light by which we see and is necessary for life on Earth. Learn about the sun. See more »
Why does the moon look so much bigger when it is near the horizon?
Why does the moon look so much bigger when it is near the horizon than when it is high up in the sky? See more »
How big does a meteor have to be to make it to the ground?
How big is a shooting star? Do they land on earth or do they burn up? Learn how what tiny particles of space dust have to do with meteors. See more »
What is the Chandler wobble?
What is the Chandler wobble? See more »
Loading more content
Horses Can Be Taught to Communicate With Us Using Symbols
How Climate Change is Monkeying Around with Your Favorite Foods
Secret U.S. Nuclear Base Threatened by Melting Ice
See More Headlines »