The Solar System
Discover all you need to know about the planets, comets and asteroids that orbit the Sun and make up our Solar System. Read the varying theories about the origins of the Solar System and find out how you can become an amateur astronomer and view it with your own eyes.
The planet Jupiter's more massive than all the other planets in the Solar System put together. It's a stormy mass of raging gas and metallic hydrogen.
How high can you go? Get the low-down on all that's 'high up' in our fact-packed infographic. Who has flown the highest? Could we really build an elevator to space?
The planet Mars: perfect if you like freezing dust clouds of tremendous intensity but dislike oxygen and gravity.
The planet Mercury is the smallest and nearest planet to the Sun in the Solar System.
The planet Neptune is the furthest planet from the Sun and is orbited by Triton.
Satellites orbit planets, which orbit the Sun, which in turn orbits the centre of the Milky Way. But why?
How did the planets, moons and asteroids in the Solar System form? There is a surprising amount of debate and several strong and competing theories.
19th-century astronomers went beyond cataloguing the skies to understanding their composition and predicting what could not be seen.