Derek Devilles Qu8k (pronounced Quake) launched from the Black Rock Desert in Nevada to an altitude of 121,000′ before returning safely to earth. Above 99% of the atmosphere, the sky turns black in the middle of the day and the curvature of the earth is clearly visible. The rocket motor produced 4,000 lbs of thrust for 8 seconds accelerating the vehicle to over Mach 3 at over 10,000′. After that, momentum carried the rocket skyward for another 84 seconds to a peak altitude of 121,000′.
Full video: High Altitude Rocket On-board Video