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John Couch Adams

astronomy
John Couch Adams and the Discovery of Planet Neptune

John Couch Adams and the Discovery of Planet Neptune

Harald Sack
On January 21, 1821, English mathematician and astronomer John Couch Adams passed away. Adams most famous achievement was predicting the existence and position of Neptune, using only mathematics. The calculations were made to explain discrepancies with Uranus‘s orbit and the laws of Kepler and Newton. At the same time, but unknown to each other, the same calculations were made by Urbain Le Verrier.[5] Youth and Education John Couch Adams was born at…
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astronomy
Urbain Le Verrier and the hypothetical Planet Vulcan

Urbain Le Verrier and the hypothetical Planet Vulcan

Tabea Tietz
On 2 January 1860, French astronomer Urbain Le Verrier announced the discovery of Vulcan, a hypothetical planet inside the Mercury orbit, to a meeting of the Académie des Sciences in Paris. Despite the lack of any reliable observation, Le Verrier really was convinced until his death that he had discovered a new planet. It was Einstein’s special theory of relativity and a completely new understanding of the laws of gravity that modified the predicted…
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astronomy
James Challis and his failure to discover the planet Neptune

James Challis and his failure to discover the planet Neptune

Harald Sack
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…
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