It's the season finale - so we've crammed in 3 interviews with 3 superstars!

Dr Steve Hancock is working on NASA's GEDI mission from Edinburgh with the University of Maryland

Vladimir Ivan is working with the only NASA humanoid robot outside the US, Valkyrie, to simulate life on Mars

and David Alexander OBE joins us from Houston, Texas where the Glaswegian Professor of Astrophysics is the director of the Rice Space Institute

As always, Dr Murray Collins and journalist Kim McAllister present the programme in their irreverent style - this week Kim educates Murray about the importance of Irn Bru and why he should wear a swimming pool noodle on his head.

Drop them a line on Twitter @murraybcollins and @kimmcallister

Check out the websites:

ed.ac.uk

ed.ac.uk/bayes