I am Col. Chris Hadfield, retired astronaut.
I am Commander Chris Hadfield, recently back from 5 months on the Space Station.
Since landing in Kazakhstan I've been in Russia, across the US and Canada doing medical tests, debriefing, meeting people, talking about spaceflight, and signing books (I'm the author of a new book called "An Astronaut's Guide to Life on Earth").
Life after 3 spaceflights and 21 years in the Astronaut Corps is turning out to be busy and interesting. I hope to share it with you as best I can.
So, reddit. Ask me anything!
Thanks everyone for the questions! I have an early morning tomorrow, so need to sign off. I'll come back and answer questions the next time a get a few minutes quiet on-line. Goodnight from Toronto!