It’s been 40 years since Challenger space shuttle exploded
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NASA's space shuttle Challenger completed 10 missions before it broke apart during a launch in 1986, killing seven astronauts.
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.
Forty years ago, Americans were shocked when the space shuttle Challenger exploded 73 seconds after it launched on a chilly day in Florida.