The End of the World? HD

Professor Paul Callanan, Physics Department, University College Cork says: "Many believe that the Mayan calendar predicts that the world will end on December 21 (the Winter Solstice in the Northern Hemisphere): despite the somewhat implausible nature of this event, it does appear to be gathering quite a bit of media attention. However, from scientific point of view, we do have an understanding of how the world is likely to end (aside from issues concerning how humanity will take care of the planet in the future)." Watch the film to see how astrophysicists think the world might end.