Today, it’s believed that Jupiter and Saturn, the largest planets, were the first to fully form, both within a few million ...

Discover the order of planets in the solar system. From Mercury to Neptune, explore our solar system and learn more about our cosmic home. The solar system is our cosmic neighborhood, made up of ...

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 ...

With a radius of 3,959 miles, Earth is the fifth largest planet in our solar system, and it's the only one known for sure to have liquid water on its surface. Earth is also unique in terms of ...

If we ever manage to travel to the gas planets ... are parts of the distant Solar System that we know about, such as the Kuiper Belt. It's all good and well knowing facts about space, but how ...

Our solar system may have a ninth planet after all, following the declassification of Pluto nearly two decades ago, ...

For the better part of a century, we believed there were nine planets in our solar system, with Pluto being the farthest from the sun. Since the discovery of more Pluto-sized dwarf planets ...

The closest are the four rocky planets, the remaining gas planets inhabit deeper space. The solar system is also home to many other cosmic bodies including asteroids, moons and dwarf planets such ...