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  10 December 2014 Last updated at 07:08 GMT
  Nasa astronaut Commander Chris Hadfield dropped into Newsround's mission control to answer kids questions, taste our finest space food and sing a cracking space lullaby.
  Here's your chance to watch it again.
summary: It has been a fantastic year for space exploration this year, from landing the Rosetta space probe on a comet, to testing out rockets that could take astronauts to Mars.