But just 73 seconds after blast-off, the shuttle burst into flames, leaving a cloud of smoke in the sky before it plummeted ...

after which engineers spotted O-ring seal defficiencies that would doom Challenger a year later.… The five crew members launched on the three-day jaunt to space and back – aboard Space Shuttle ...

NASA succeeded in returning the Space Shuttle fleet to flight following the devastating loss of the Space Shuttle Challenger and her seven-member crew on the STS-51L mission. Now, in a radically ...

The Challenger 2 is a third-generation main battle tank (MBT) used by the British Army, Oman, and Ukraine. It is one of the finest tanks in the world today. Vickers Defence Systems designed and built ...