James Challis

James Challis FRS (12 December 1803 – 3 December 1882) was an English clergyman, physicist and astronomer. Plumian Professor of Astronomy and Experimental Philosophy and the director of the Cambridge Observatory, he 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.

James Challis
Born(1803-12-12)12 December 1803
Died3 December 1882(1882-12-03) (aged 78)
Cambridge, England
Known forNot discovering Neptune
Scientific career
FieldsAstronomy
InstitutionsCambridge Observatory
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