It was once one of the great unsolved problems of the early modern world: the calculation of exactly how far east or west a given point was on the surface of the Earth. Longitude was a challenge that sat at the intersection of science, navigation, empire and time itself.
For centuries, sailors had been able to determine latitude, or their position nort ... Show More
Jul 12
The Space Shuttle Challenger Disaster
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 h ... Show More
52m 45s