Stargazing Live returns for a new series tonight with Professor Brian Cox and Dara O Briain chatting to British astronaut Tim Peake on the International Space Station. Also, Liz Bonnin reports from the European Astronaut Centre in Cologne, where John Bishop tries out the training programme. While scientist Carly Howett guides viewers through a close-up look at Pluto and Professor Lucie Green offers tips on spotting the space station in the night sky.