In the first of a new regular podcast, comedian Mark O'Sullivan chats with Dr Stuart Clark, Astrophysicist, Journalist, Novelist and Broadcaster. In this episode... Einstein, Space Planes, Orbital Litter, Star Wars, Dr Stu's Big Fat Galactic Liar Quiz and a try-it-at-home Space Mystery! Tweet your questions to @DrStuClark or @immarkosullivan   See acast.com/privacy for privacy and opt-out information.