In these podcasts Royal Observatory Greenwich astronomer Radmila asks our visiting astrophysicists and space scientists about their career background, why they became an astrophysicist, why we should care about science and which unsolved mystery keeps them up at night.

In this episode Radmila talks to Dr Steve Banham, a geologist at Imperial College London. Steve works with the NASA Curiosity rover team analysing rock formations in Gale Crater on Mars – thought to be once covered in water.