Add Yahoo as a preferred source to see more of our stories on Google. Forty years ago, the world watched in horror as NASA's space shuttle Challenger exploded mid-air over Florida, killing all seven ...

The space shuttle is the “world’s first reusable spacecraft,” launching like a rocket, orbiting like a spacecraft and landing like a plane. Space shuttles could carry satellites, space probes, and ...

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 ...

The space shuttle system has been modified many times since the first launch of space shuttle Columbia in 1981. During the 1980s, major upgrade programs were established to respond to problems and ...