Space Shuttle Challenger explodes
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NASA's Space Shuttle Program, which ran from 1981 to 2011, was a complex and ambitious project that pushed the boundaries of space exploration, but was marred by two tragic accidents during the shuttle era.
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Jan. 16, 2003: Space Shuttle Columbia's final launch
On Jan. 16, 2003, Space Shuttle Columbia launched on its 28th mission, STS-107. NASA had five additional space shuttle missions planned for 2003, but STS-107 was the only one focused on scientific research;
NASA Administrator Jared Isaacman appeared to suggest that space shuttle Discovery may not be relocated to Houston's Johnson Space Center in Texas.