Rory Griffin

On November the 11th, billions of miles from Earth, a spacecraft orbiter and lander will do what no other has dared to attempt: land on the volatile surface of a comet as it flies round the sun at 41,000 mph. If successful, it could help peer into our past and unlock secrets from our very origins. The stakes couldn't be higher.

Dan Riskin presents 'Landing On A Comet: Rosetta Mission' live from Germany as after 10 years of travelling towards its destination and after looping round the sun five times, Rosetta is set to drop in it's final location.

Hawking gives us the ultimate guide to the universe, a ripping yarn based on real science, spanning the whole of space and time -- from the nature of the universe itself, to the chances of alien life, and the real possibility of time travel.