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. Set to become the first teacher in space, McAuliffe had a whole lesson plan ready to teach the world in 1986.
Millions of kids would have tuned in for the live and taped lessons from space, but they never had the chance.
NASA released McAuliffe's lesson notes and practice videos several years after the shuttle disaster. Her lost lessons are now available on theChallenger Center website.
Read Full Article »