STS-135 video: Docking

The tugboat and barge transporting the last space shuttle external tank to its display venue in California have reached the inlet to the Panama Canal, now just days away from sailing into the Pacific.

Watch the shuttle Atlantis’ backflip, which occurred five years ago today, before docking to the International Space Station.

A series of unprecedented back-to-back test-firings of a rocket engine originally developed for NASA’s space shuttle concluded earlier this month, giving engineers data crucial to achieving rapid 24-hour turnarounds planned for a U.S. military-funded reusable winged booster under construction at Boeing, government and industry officials said.