The space shuttle Challenger explosion was a defining moment of the 1980s. Whether you were watching on TV or in person, ...

Seven American spacefarers were killed in a tragic event 40 years ago today that has become widely known as the Challenger ...

On a chilly January morning in 1986, millions watched in horror as the Challenger shuttle exploded, taking the lives of seven ...

Former astronaut and professor Terry Hart is opening up 40 years later about the friends and colleagues he lost on board the ...