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What does David Bowie’s Space Oddity have to do with SpaceX, should we go back to the Moon or straight to Mars, and what is multi-messenger astrophysics anyway?
All these questions and more are answered in our 2017 retrospective, in which we also talk Cassini, Voyager, exoplanets and Laika the dog. Plus, our News Bingo quiz returns with a special end-of-year edition.
Listen to Sky At Night’s Christmas Special Podcast here (right click to download)