On October 3, 1942, an A-4 rocket lifted off from Peenemünde, Germany, screaming 84.5 kilometers into the sky. It was the first human-engineered machine to touch the threshold of space. The flight unlocked the terrifying physics of liquid-propellant guidance, supersonic aerodynamics, and inertial navigation—technologies that would soon rain down on London as the V-2 terror weapon. That evening, military chief Walter Dornberger declared that humanity had 'invaded space.' The milestone remains space exploration’s ultimate Faustian bargain: the foundational architecture of the Apollo program, satellite telecoms, and orbital mechanics was born not out of cosmic curiosity, but wartime desperation. Every modern launch vehicle carries the DNA of Peenemünde, serving as a persistent reminder that the code and combustion pushing us off-planet were originally compiled for destruction.