NASA's space shuttle Challenger exploded 40 years ago today, killing its 7-person crew. Photos reveal Challenger's legacy.

NASA's space shuttle Challenger completed 10 missions before it broke apart during a launch in 1986, killing seven astronauts ...
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40 Years Later: How The Tragedy of Challenger/STS-51-L Changed NASA Forever

For the millions of people across the country and around the world that watched the tragic loss of Challenger live, the ...
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OTD In Space - July 23: Chandra X-Ray Observatory Deployed By STS-93

Add Yahoo as a preferred source to see more of our stories on Google. On July 23, 1999, the space shuttle Columbia launched into orbit to deploy the Chandra X-ray Observatory. This space telescope can ...
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NASA STS-7 Mission Report (multiple copies)

CC0 Usage Conditions ApplyClick for more information. Material is subject to Smithsonian Terms of Use. Should you wish to use NASM material in any medium, please ...