The Space Shuttle Columbia disaster was a fatal accident in the NASA Space Shuttle program on February 1, 2003. During the launch of the STS-107 mission, foam insulation from the Space Shuttle external tank fell and damaged the thermal protection system of the orbiter. During atmospheric reentry at the end of the mission, the damage allowed hot gases to penetrate the heat shield and destroy the internal wing structure. The orbiter broke apart inflight, killing all seven astronauts on board (crew pictured). Debris was scattered over eastern Texas and Louisiana, and a massive recovery effort was launched to recover debris and crew remains. The accident resulted in a two-year hiatus for the Space Shuttle program, and an investigation into its cause discovered that NASA had become accustomed to insulation foam hitting the orbiter on previous missions. The accident contributed to the eventual cancellation and retirement of the Space Shuttle, which last flew in 2011. (Full article...)