Private Spaceship Completes Second Rocket-Powered Test Flight

The privately-backed SpaceShipOne suborbital rocket plane made its second powered flight today.
Built by Scaled Composites of Mojave, California, the piloted vehicle was powered by a hybrid rocket motor to over 105,000 feet. The engine burned for 40 seconds, zipping to Mach 2, or two times the speed of sound, according to a source that witnessed the test flight high above Mojave, California skies.