It's a banner day for space exploration Tuesday, as the era of human spaceflight marks its 50th anniversary while NASA celebrates its own 30th anniversary of the first space shuttle flight. Full story
When John Young and Bob Crippen launched on the space shuttle Columbia on April 12, 1981, it was the dawn of a new era. NASA's shuttle program would go on to achieve great things, and suffer two terrible losses, over the course of its 30-year history. Full story
Feb. 1: The 2003 loss of the Space Shuttle Columbia set in motion major changes in U.S. space policy. Former NASA Administrator Michael Griffin sits down with NBC's Tom Costello to discuss the transition.
Dec. 31: NASA has released new information about what the astronauts went through in their final moments on board the space shuttle Columbia in 2003. NBC’s Tom Costello reports.
Dec. 30: An exhaustive NASA review of the Shuttle Columbia disaster revealed troubling details that the agency hopes will improve equipment and protocols for future space crews. NBC's Tom Costello reports.