The space shuttle Endeavour lifts off on its first flight since the 2003 Columbia disaster. Its crew of seven includes teacher turned astronaut Barbara Morgan, back up to NASA's original teacher in space, Christa McAuliffe, who died in the Challenger accident.
Source: NASA TV (3 min 3 sec MPEG-4 (H.264) file)
Download this clip to your hardrive.
(Windows users right-click this link. Mac users control-click this link)