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. On this day in 2007 – September 27th – NASA's Dawn spacecraft was launched.Dawn orbited and studied the asteroid Vesta, and then went on to study dwarf planet Ceres. The mission has ended, but the spacecraft remains in orbit around Ceres..
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On this day in 1605 – September 28th – French astronomer and mathematician Ismaël Bullialdus was born in Loudon.
Often regarded as ‘the most noted astronomer of his generation’ he wrote several books, the most famous being Astronomia Philolaica, in which he supported Johannes Kepler’s elliptical planetary orbits. Bullialdus was also a defender of the views and ideas of Copernicus and Galileo.
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On this day in 1765 – September 29th – German astronomer Karl Ludwig Harding was born in Lauenburg.
He is best remembered for discovering the third asteroid, Juno. He found it on 1 Sep 1804 while working at the private observatory of his countryman and fellow astronomer, Johann Hieronymus Schröter..
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. On this day in 1880 – September 30th – Henry Draper took the first photograph of a nebula, the Orion Nebula.Draper was an American physician, professor of medicine, keen astronomer and pioneer of astrophotography. Stars with HD numbers are listed in the Henry Draper Catalog compiled by Harvard College Observatory and funded by Draper's widow, Anna Draper..
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. On this day in 2016 – September 30th – ESA's Rosetta mission ended with a controlled descent to the surface of Comet Churyumov-Gerasimenko..
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On this day in 1891 – September 30th – Soviet scientist, mathematician, astronomer and geophysicist Otto Yulyevich Schmidt was born in Mogilev, Russian Empire (now Belarus).
A graduate of Kiev University in 1913, Schmidt was to become professor of geophysics at the Institute of Earth Physics in Moscow where he specialized in the study of lunar surface.
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Last edited by Mona - Astronomy; 10/02/23 01:07 PM.
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On this day in 1845 – October 1st – English astronomer William Henry Mahoney Christie was born in Woolwich, London.
He served as Chief Assistant to George Biddell Airy at the Royal Observatory, Greenwich from 1870 to 1881, replacing Airy in 1881 to become the eighth Astronomer Royal of England. He remained in office until his retirement from the post in 1910.
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Last edited by Mona - Astronomy; 10/02/23 12:59 PM.
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On this day in 1897 – October 1st – the 40-inch refracting telescope was dedicated at Yerkes Observatory in Williams Bay, Wisconsin, USA.
From 1897-1909 it was the world's largest telescope. It's still the world's largest refracting telescope, and is commonly known as the Yerkes "Great Refractor".
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Last edited by Mona - Astronomy; 10/02/23 12:57 PM.
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On this day in 1958 – October 1st – NASA was founded.
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On this day in 1935 – October 3rd – Apollo 16 astronaut Charles "Charlie" Duke was born in Charlotte, North Carolina.
Duke was the Lunar Module Pilot of Apollo 16 and the tenth and youngest person to walk upon the surface of the Moon.
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