Astronaut Col. Chris Hadfield
True Facts: Astronaut Chris Hadfield On "Gravity" & Other Space OdditiesChris Hadfield has the inside scoop on the truth about the final frontier.
Astronaut Chris Hadfield On Sandra Bullock's "Gravity" UnderwearCONAN Highlight: Chris thought "Gravity" captured space visuals perfectly, but Sandra was missing her big girl diapers.