Saturn

The possible planet is just four-and-a-half light years away and may have moons that sustain life.

Enceladus, a small moon of Saturn, throws a geyser of water 9,000km (6,000 miles) into space.

Nasa-JPL is developing a snake robot surveyor to search for signs of life in our universe

Scientists define a space project that few, if any, of them will get to see through to completion.

Planets Jupiter and Saturn cross paths in the night sky, an event known as the great conjunction.

Jupiter and Saturn - the Solar System's largest planets - have crossed paths in the night sky.