Videos of NASA's rocket plane test
Watch clips of the X-43A's world record-breaking air speed test.
The NASA site is reposting parts of the video from the X-43A rocket plane test, shown live online yesterday afternoon. It's a beautiful few minutes, with the sleek unmanned "scramjet" dropping gracefully from the wing of a B-52, and then blasting off for 110,000 feet and Mach 10 speeds.