![Chris Hadfield on Twitter: "Catching up around the Sun, Happy Leap Day, everyone! (Keeping seasons straight since 1582) https://t.co/4IL00MQk7V https://t.co/zuJOOMyxe2" / Twitter Chris Hadfield on Twitter: "Catching up around the Sun, Happy Leap Day, everyone! (Keeping seasons straight since 1582) https://t.co/4IL00MQk7V https://t.co/zuJOOMyxe2" / Twitter](https://pbs.twimg.com/media/CcY298UVAAE2Byg.jpg)
Chris Hadfield on Twitter: "Catching up around the Sun, Happy Leap Day, everyone! (Keeping seasons straight since 1582) https://t.co/4IL00MQk7V https://t.co/zuJOOMyxe2" / Twitter
Commander Chris Hadfield Astronaut Commander Chris Austin Hadfield (born 29 August 1959) is a retired Canadian astronaut who was
Chris Hadfield on Twitter: "Where did we all come from? This map tracks our migrations through our DNA. Makes me think. https://t.co/xW64ydnR6f https://t.co/UBBEqVSa3w" / Twitter
![Chris Hadfield on Twitter: "If you release 29,000 rubber duckies into the ocean, where do they end up? http://t.co/UZRG8nzGsW Our cool world. http://t.co/h1txD55yml" / Twitter Chris Hadfield on Twitter: "If you release 29,000 rubber duckies into the ocean, where do they end up? http://t.co/UZRG8nzGsW Our cool world. http://t.co/h1txD55yml" / Twitter](https://pbs.twimg.com/media/BSmROAPCUAAxPdd.png:large)