HEAT 1X Tycho Brahe was the first rocket and spacecraft combination built by Copenhagen Suborbitals, a Danish organization attempting to perform the first amateur manned spaceflight. The vehicle consisted of a motor named HEAT-1X and a spacecraft Tycho Brahe. Its launch location was a floating platform named Sputnik. The rocket was test launched twice: In 2010 a power shortage caused a valve to freeze shut, which prevented launch.