Technology advanced rapidly during the 20th Century. One hundred years ago, 17 Dec. 1903, the Wright Brothers flew the world's first powered aircraft at Kitty Hawk, North Carolina. It was a flight of 37 m (120 ft) that lasted 12 sec at a maximum speed of 16 kmph (10 mph). Forty-four years later Chuck Yeager would break the sound barrier — Mach 1 at 1086 kmph (675 mph). Twenty-two years after that in 1969, Neil Armstrong landed on the moon.
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