Next, its rocket ignited to propel the vessel, and its three crew members, up to where the sky turned black. Unity reached Mach 3 — three times the speed of sound — before the rocket motor was ...
On Oct. 6, the German Aerospace Center (DLR, Braunschweig) launched a 13.5-meter-long research rocket for the Advanced Technologies for High Energetic Atmospheric Flight of Launcher Stages (ATHEAt) ...
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