National Aeronautics and Space Administration
  • A former space shuttle commander - whose twin brother is married to former Rep. Gabrielle Giffords - will attempt the longest spaceflight ever by an American.

    LAST UPDATE : Dec 13, 2012, 4:30 PM EST
  • The two men will spend a year aboard the International Space Station, gathering data to help prepare for future interplanetary missions.

    LAST UPDATE : Dec 13, 2012, 12:00 PM EST