What's the first book Commander Chris Hadfield should read when he gets home?

UPDATED: This contest is now closed. Congratulations to commenter LLreader -- you've won a CBC Books prize pack!

Have you been following Commander Chris Hadfield's fascinating months on the International Space Station? As the first Canadian astronaut to command the ISS, he's spent the past 144 days conducting zero-gravity experiments, answering questions from earth, Tweeting out beautiful photos of earth, and making music videos. And he's set to return to earth this evening (CBC News will have the play-by-play of his arrival).

To celebrate his return to earth, CBC Books wants to compile a reading list for Commander Hadfield, and we need your help: What's the first book he should read when he comes back down to earth? Tell us in the comments for a chance to win a great CBC Books prize pack! You have until 11:59 p.m. ET on Friday, May 17 to enter. CBC.ca contest rules are available here.