Dara O Briain and Professor Brian Cox celebrate our amazing night sky. They kick things off with the search for evidence of life on Mars and ask viewers for help to explore an uncharted area of the red planet's surface. Liz Bonnin reports live from NASA mission control to find out the latest findings of the Curiosity Rover, whilst Mark Thompson offers tips on how to observe the moons of Jupiter.

• Dara Ó Briain
• Brian Cox
• Liz Bonnin