In a podcast exclusive, Britain's first astronaut, Helen Sharman, joins the Space Boffins 30 years after her 1991 Juno mission. She describes the selection process, training in the Soviet Union and her return. Author of the Martian, Andy Weir, chats about his latest book, Jason Achilles Mezilis is the musician behind the Mars microphone, and we commemorate the death of Apollo 11 legend Mike Collins. It's another epic podcast... how do we do it? Like this podcast? Please help us by supporting the Naked Scientists