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The Discovery of Charon, Pluto’s largest Moon

The Discovery of Charon, Pluto’s largest Moon

Tabea Tietz
On June 22, 1978, US astronomer James Christie discovered Charon, the largest moon of Pluto. Although there was a discussion after the reclassification of Pluto as a dwarf, Charon is not in the list of dwarf planets currently recognized by the IAU. A Bulge on Pluto On June 22, 1978,  James Christy had examined the magnified images of the former planet Pluto, taken with the 61-inch Flagstaff telescope two months prior. He noticed a…
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astronomy
Percival Lowell and the Search for Pluto

Percival Lowell and the Search for Pluto

Harald Sack
On March 19, 1915, American astronomer Percival Lowell began to make photographies of the sky in the Lowell Observatory, which was founded by him, to search for a planet beyond Neptune. 15 years later, the dwarf planet Pluto was discovered on these photographies. “Formulae are the anaesthetics of thought, not its stimulants and to make any one think is far better worth while than cramming him with ill-considered, and therefore indigestible, learning.” –…
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astronomy
To be or Not to be a Planet – Eris, the planet of Discord

To be or Not to be a Planet – Eris, the planet of Discord

Harald Sack
On October 21, 2003, a photograph of the nocturnal sky was taken, where almost 2 years later, in January 2005, evidence was raised that there might be a 10th planet at the borders of our solar system: Eris, located in the Kuiper Belt and named after the Greek goddess of discord. And discord it should be, because Eris as a planet is rather small and astronomers were arguing, whether it is a…
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