Space Shuttle Challenger disaster
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On January 28, 1986, the Space Shuttle Challenger broke apart 73 seconds into its flight, killing all seven crew members aboard. The spacecraft disintegrated 46,000 feet above the Atlantic Ocean, off the coast of Cape Canaveral, Florida, at 11:39... Wikipedia
Date: January 28, 1986
Number of deaths: 7
Cause: O-ring seal failure in right SRB due to cold weather and wind shear
Location: Florida, Cape Canaveral, and Atlantic Ocean