What will the end of days actually look like? And how will it happen? This month, Izzie and Dr Becky explore the end of the Universe with cosmologist Dr Katie Mack - author of The End of Everything (Astrophysically Speaking). They also chat to astronomy journalist and author of The Unknown Universe, Dr Stuart Clark, who explains the role of dark energy. Plus, Dr Robert Massey takes on your questions and shares when it is best to see Jupiter, Saturn and Venus in December. Send your astronomy questions for January's Q&A to podcast[@]ras.ac.uk or tweet @RoyalAstroSoc. Book Club recommendations:  The Red Planet - Simon Morden  Apollo’s Muse - Mia Fineman and Beth Saunders  Fire and Ice - Natalie Starkey The Invisible Universe - Matt Bothwell The Mysteries of the Universe - Will Gater The Supermassive podcast is a Boffin Media production by Izzie Clarke and Richard Hollingham.