CAPE CANAVERAL, Fla. — NASA marked the 20th anniversary of the space shuttle Columbia tragedy Thursday with somber ceremonies and remembrances during its annual tribute to fallen astronauts.
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OTD In Space - January 3: Spirit Rover Lands on Mars
On04, NASA's Spirit rover landed on Mars! Also known as Mars Exploration Rover 2, this was the first of NASA's twin rovers to ...
Dark Space Official on MSN
After the disasters: NASA's quest to save the shuttle program
Tragedy forced NASA to evolve. After Columbia burned up on reentry, engineers asked if rescue was possible - while years earlier, Challenger's explosion sparked plans for safer unmanned shuttles.
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