VIDEO: The winged spaceship Columbia returned to Earth with a pinpoint landing at Edwards Air Force Base on this day 35 years ago, concluding the maiden flight of the space shuttle.
A NASA video on the investigation into the Challenger accident of January 28, 1986. The video was created by the STS 51-L Data and Design Analysis Task Force which contributed to the Presidential Commission that investigated the tragedy. (Membership required)
The last space shuttle external tank in existence, headed from the New Orleans manufacturing plant to the California Science Center for the vertical launch pad display of the retired orbiter Endeavour, has passed through the Panama Canal.