20 years after Columbia shuttle tragedy, NASA pledges 'acute awareness' of astronaut safety

Seven astronauts lost their lives on space shuttle Columbia on Feb. 1, 2003, due to a series of technical and organizational problems at NASA.

20 years after Columbia shuttle tragedy, NASA pledges 'acute awareness' of astronaut safety
Seven astronauts lost their lives on space shuttle Columbia on Feb. 1, 2003, due to a series of technical and organizational problems at NASA.