John Couch Adams (1819-1892), British astronomer. Adams used mathematics alone to calculate the position of a new planet (Neptune) from known irregula

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John Couch Adams (1819-1892), British astronomer. Adams used mathematics alone to calculate the position of a new planet (Neptune) from known irregularities in the orbit of Uranus. He did this from 1843 to 1845, after completing his mathematics degree at Cambridge University. The new planet was observed in 1846, but parallel work by the French astronomer Urbain Le Verrier meant credit was shared. Adams also studied the motion of the Moon, terrestrial magnetism, and meteor showers. He became a professor at Cambridge, and President of the Royal Astronomical Society in 1851. This portrait dates from circa 1846.

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Photo credit: © ROYAL ASTRONOMICAL SOCIETY/SCIENCE PHOTO LIBRARY / Alamy / Afripics
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