Forty years ago today, disaster struck NASA’s human spaceflight program when the space shuttle Challenger exploded 73 seconds ...

NASA's space shuttle Challenger exploded and broke apart Jan. 28, 1986, in the sky over East-Central Florida, killing the ...

Forty years ago, Americans were shocked when the space shuttle Challenger exploded 73 seconds after it launched on a chilly ...

Cold temperatures inhibited the space shuttle Challenger’s infrastructure from working properly. NASA has set potential ...

How a cold morning, failed O-rings, and flawed decision-making led to tragedy Forty years ago, Space Shuttle Challenger ...

Wednesday marks 40 years since the NASA space shuttle Challenger broke apart after lifting off, killing all seven people on ...

The 40th anniversary of the Space Shuttle Challenger disaster comes as NASA prepares for its next major step in human ...

Steve Hawley, who flew five Space Shuttle missions, and Krista Schaffer, a first-grade teacher at Christa McAuliffe ...