Try stargazing. 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 ...

The highest mountain… is on Mars! Olympus Mons is the tallest mountain in our solar system, standing at roughly 13 miles high. It’s about two and a half times Mount Everest's height above sea ...

They are stored in the Oort cloud, a huge, diffuse sphere of cometary nuclei in the far reaches of the solar system. Close to the sun, yet still beyond Neptune, circle what may well be their ...