Expedition 30 astronaut Don Pettit uses knitting needles and water droplets to demonstrate physics in space through "Science off the Sphere." This is part of the first video in a series for a partnership between NASA and the American Physical Society to share unique videos from the International Space Station with students, educators and science fans from around the world.

APOLLO 11: THE UNTOLD STORY aka FIRST ON THE MOON: THE UNTOLD STORY One-Hour Special for Discovery Science Channel / five When Neil Armstrong first set foot on the moon in July 1969, Apollo 11 was hailed as the supreme triumph of American technology. But behind the flag waving lies a very different story: the untold account of how close the mission came to disaster. Now, nearly forty years later, men on that mission reveal what really happened on the first voyage to the moon. It's a tale of how primitive computer technology, coupled with human errors and mechanical failures, nearly caused the tragic loss of the crew.



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Recorded by Commander Chris Hadfield on board the International Space Station. A revised version of David Bowie's Space Oddity.