Forty years ago, the NASA space shuttle Challenger exploded 73 seconds after liftoff, killing all seven crew members. Among the seven crew members were five NASA astronauts, as well as a payload ...

It's been 20 years since space shuttle Columbia broke apart during reentry, killing the entire crew of seven. NASA had high hopes for Columbia's 28th mission. It rocketed into space on Jan. 16, 2003, ...

Bob Ebeling was anxious and angry as he drove to work on the morning of Jan. 28, 1986. He kept thinking about the space shuttle Challenger, cradled on a Florida launchpad 2,000 miles away. Ebeling ...

The two solid rocket boosters flew in different directions as the external fuel tank became a fireball.(AP: Bruce Weaver / File) Forty years ago, the Challenger space shuttle disintegrated just after ...

On Feb. 1, 2003, the Space Shuttle Columbia disintegrated upon reentering Earth's atmosphere, killing all seven crew members on board. Major Garrett introduces CBS News Radio's coverage from that day.

Nearly 300 current and former NASA employees — including astronauts, engineers and scientists — have signed the "Voyager Declaration," a formal statement raising alarm over recent actions and steep ...