Every generation grows up with starships that jump across galaxies in a heartbeat, but the real universe is far less forgiving than the screen. The same physics that lets GPS satellites work and ...

Fifty-three years ago there was a physics instructor at U. S. Naval Academy who developed a great curiosity. He wanted desperately to know just how fast light travels. He was then a young man of 23.

Check out how insanely fast the speed of light actually is!