Need a new idea to keep kids entertained? Try stargazing. Free learning activities and videos about the solar system Free learning activities and videos about the solar system Free learning ...

The Oort Cloud is the name given to a theorized group of potentially trillions of icy objects on the edge of our solar system ...

Mars has fascinated people throughout history, and today, it is one of the most explored places in the solar system, with many ... Its orbit is about 1.5 times the size of Earth's.

With a radius of 2,106 miles, Mars is the seventh largest planet in our solar system and about half the diameter of Earth. Its surface gravity is 37.5 percent of Earth’s. Mars rotates on its ...

Create your own masterpiece of the solar system. You could paint it, use different sized objects or draw it. Don't forget to label it and add any facts that you know!

The solar system has many more moons than the one we can see in the sky. But how many do we actually know about? And how many more are waiting to be discovered? Faint signatures detected by the ...