STS-135 video: Narrated flow tapes

A cargo-delivery module packed with 9,400 pounds of food, equipment and science gear departed shuttle Atlantis’ payload bay on July 11, 2011 and parked at the International Space Station’s doorway for unloading.

It was 1986 and the U.S. Air Force was on the cusp of something unprecedented in human spaceflight — launching a space shuttle crew from California and paving the way for people to fly true polar missions.

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)