Mark Kelly

NASA's Space Shuttle: How Does Spaceflight Change Sleep Patterns?
April 29, 2011

Earlier this afternoon, NASA postponed the launch of the space shuttle Endeavor, citing problems with heaters in the auxiliary power unit. The shuttle launch has been closely followed in the news, both because recovering congresswoman Gabrielle Giffords is seeing off her husband, astronaut Mark Kelly, and because this mission is the second-to-last in the shuttle program's history, and for the foreseeable future of the American space program.