James Challis

James Challis and his failure to discover the planet Neptune

James Challis and his failure to discover the planet Neptune

On December 12, 1803, English clergyman, physicist and astronomer James Challis was born. Challis investigated a wide range of physical phenomena though made few lasting contributions outside astronomy. He is best remembered for his missed opportunity to discover the planet Neptune in 1846. Early Years James Challis was born in Braintree, Essex, UK, where his father, John Challis, was a stonemason.After attending Braintree School, the Revd Daniel Copsey’s school, Braintree, and Mill…
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Johann Gottfried Galle and the First Observation of Planet Neptune

Johann Gottfried Galle and the First Observation of Planet Neptune

On June 9, 1812, German astronomer Johann Gottfried Galle was born. Galle actually was the first person to view the planet Neptune and know what he was looking at, by making use of the calculations of his fellow astronomer Urbain Le Verrier. Johann Gottfried Galle studied at the Friedrich-Wilhelms-Universität Berlin between 1839 and 1833 and started to work at the new Berlin Observatory two years later. There, he worked for 16 years and…
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