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From time to time we see comets in the sky. Like asteroids, they are large, dusty, icy rocks several hundred meters long and a few kilometers in diameter. There are…

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225088 Gonggong (2007 OR10) discovered on January 8, 2005 by Michael Brown and his team thanks to the 1.26 m telescope of Mount Palomar, it is also a dwarf planet. In…

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Neptune has 14 known moons, which are named for minor water deities in Greek mythology. By far the largest of them is Triton, discovered by William Lassell on October 10,…

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Neptune is invisible to the naked eye. It was discovered in 1846 by Urbain Le Verrier because something disrupted the orbit of Uranus. The astronomer then made calculations and located…

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