Astronomy Unlocked: Nov. 20, 2025
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Today in the History of Astronomy
Today in the History of Astronomy
Nov. 2, 1885: Birth of Harlow Shapley
Today in the History of Astronomy
Nov. 1, 1917: The Hooker Telescope sees first light
Today in the History of Astronomy
Oct. 31, 1992: The pope addresses the Galileo affair
Today in the History of Astronomy
Oct. 30, 1981: Venera 13 launches
Today in the History of Astronomy
Oct. 29, 1998: John Glenn returns to space
Human Spaceflight
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Today in the History of Astronomy
Oct. 27, 1961: The first Saturn rocket launches
Today in the History of Astronomy
Oct. 26, 2004: Cassini at Titan
Today in the History of Astronomy
Oct. 25, 1671: Iapetus is discovered
Today in the History of Astronomy
Oct. 24, 1601: The death of Tycho Brahe
Today in the History of Astronomy
Oct. 23, 1893: Birth of Ernest Opik
Today in the History of Astronomy
Oct. 22, 2137 B.C.E.: An eclipse darkens skies over ancient China
Today in the History of Astronomy
Oct. 21, 1897: Yerkes Observatory is dedicated
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