Challis

Challis, James (1803-1882), an English astronomer, born at Braintree in Essex, and educated at Cambridge, becoming senior wrangler and Smith's Prizeman in 1825. In 1836 he was appointed professor of astronomy at Cambridge, and was till 1861 director of the Cambridge observatory, where he noted the position of the planet Neptune before its discovery at Berlin in September, 1846. Among other works he published in 1861 a work on the plan and development of the Creation in answer to the Mosaic Cosmogony in the Essays and Reviews.