For a better experience on your device, try our mobile site.
Explore mankind's voyages to the Red Planet.
News: Stranded probe sends further signals
Viking tests for Martian life
Mariner reveals Mars
Pathfinder: pioneering wheeled rover
Mariner 9 finds new features
Spectacular ice fountains on one of Saturn's moons blast up into space.
Brian Cox shows how a Danish astronomer discovered that light has a fixed speed.
Find out what you can see in the autumn night sky.
Patrick Moore finds out how galaxies bend light.
Find out more about everyone's favourite astronomy programme.
Look back on the world's first reusable spacecraft.
Methane plumes may be an important clue.
Download your free guide to the stars and get the most out of the night sky.
Nature's Miracle Orphans
More Science and Nature programmes on BBC iPlayer
No radio programmes available