NASA Screamjet – Err Scramjet Nears Mach 10

NASA’s test flight of the X-43A scramjet was a smashing success today. The experimental jet topped out at Mach 9.6, nearly 6,800 mph. The flight smashed its previous record-breaking flight of Mach 7. At speeds like that, a flight from Guam to the United States would take only a couple hours.