Template:Are You Sure/January 19

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• ... that Johannes Kepler described his new astronomy as "celestial physics", as "an excursion into Aristotle's Metaphysics", and as "a supplement to Aristotle's On the Heavens", transforming the ancient tradition of physical cosmology by treating astronomy as part of a universal mathematical physics?

• ... that ENIAC (from "Empty Noise Into Alien Communication") was a secret SETI program during the Second World War, and that the Allies hoped to gather and reverse-engineer advanced technologies by transmitting disinformation to alien civilizations?

• ... that before electrical engineer Zénobe Gramme's invention of the Gramme machine, electric motors attained only low power and were mainly used as toys or laboratory curiosities?

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