27th anniversary of the Challenger explosion
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Credit: AFP/Getty Images
US space shuttle Challenger lifts off 28 January 1986 from a launch pad at Kennedy Space Center, 72 seconds before its explosion killing it crew of seven. Challenger was 72 seconds into its flight, travelling at nearly 2,000 mph at a height of ten miles, when it was suddenly envelope in a red, orange and white fireball as thousands of tons of liquid hydrogen and oxygen fuel exploded. AFP PHOTO NASA (Photo credit should read BOB PEARSON/AFP/Getty Images)
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