During the days leading up to the launch of Challenger on STS-51-L (January ... in the orbiter (five), and on the tank (one). Space Shuttle Main Engines In 1995, the power head was narrowed ...

As the investigation into and recovery from the Challenger disaster proceeded ... of Discovery’s Space Shuttle Main Engines (SSMEs) were part of the program’s recertification mandate.

Andrew 'Andy' Freed is most well-known for being a Purdue professor, teaching notable classes taken by a large majority of ...

Marshall Space Flight Center also came to control three of the primary elements of the space shuttle: the main engines on the ... when the space shuttle orbiter Challenger exploded Jan. 28 ...

Thirty years ago on January 28, seven astronauts were killed when the Challenger space shuttle exploded just 73 seconds after launch. One of those seven astronauts was Christa McAuliffe.

In 1986 he somewhat reluctantly agreed to join the Rogers Commission, whose task was to investigate the Challenger disaster. The space shuttle Challenger had exploded a little more than a minute ...