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Nov 30, 1054
Chinese Astronomers Observe Supernova in Taurus.
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Aug 24, 1259
An observatory was built for the famous Persian astronomer, Nasir al-Din al-Tusi.
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Apr 3, 1543
Copernicus publishes his heliocentric theory of the Universe.
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The first reflecting telescope was built by Newton.
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Halley correctly predicts the return of a comet (Halley's comet) in 1758
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The discovery of Uranus by Herschel
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Piazzi discovers first asteroid, Ceres.
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The Great Red Spot on Jupiter becomes prominent.
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Albert Einstein introduces his Theory of Relativity.
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Hubble shows that galaxies exist outside the Milky Way.
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The founding of archeoastronomy
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Armstrong and Aldrin walk on the Moon for the first time.
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Galileo space probe reaches Jupiter
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Re-entry of the Spanish satellite Minisat 1
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Release of the Huygens probe from the Cassini spacecraft orbiting Saturn
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Al mamon founds the Baghdad school of Astronomy.
Al mamon founds the Baghdad school of Astronomy.