Out of all humankind’s amazing feats, perhaps nothing is more impressive than our ability to launch into outer space. Though the first-ever space flight occurred in 1957 when the Soviet Union launched Sputnik 1 into space, rocket engine technology was already being tinkered with in previous decades. Examples like the Bell rocket-propelled X-1 ‘Glamorous Glennis’ airplane, the first aircraft to break the sound barrier in 1947, show that the development of space exploration technology occurred decades before NASA astronauts
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