On February 1, 2003, the Space Shuttle Columbia disintegrated upon reentering Earth's atmosphere, killing all seven crew members. The disaster was the second fatal accident in the Space Shuttle program after Space Shuttle Challenger, which broke apart and killed the seven-member crew 73 seconds after liftoff in 1986. After the disaster, Space Shuttle flight operations were suspended for more than two years, as they had been after the Challenger disaster. This is the story of the Space Shuttle Discovery and her crew, which launched from NASA's Kennedy Space Center July 26, 2005, ending the two-and-a-half year wait for the historic return to flight mission. STS-114 included breathtaking in-orbit maneuvers, tests of new equipment and procedures, and a first-of-its-kind spacewalking repair. Follow the crew as they train for America’s return to space and remember those who were lost.