In 1986, seven astronauts boarded Space Shuttle Challenger for what was meant to be a routine tenth flight of the orbiter. Seventy-three seconds after lift-off, the shuttle broke apart in front of millions of viewers, in what remains one of the worst disasters in the history of human spaceflight.
But how did a craft NASA claimed was as safe as an airline ... Show More
Jul 3
The Founding Fathers of the US (Re-run)
The founding of the United States on July 4th, 1776, changed the world, and inspired other colonies to control their own destinies. The men responsible for writing and signing the Declaration of Independence - the Founding Fathers - have gone down in history as legends, with an a ... Show More
57m 47s