See also: 1845 in science, other events of 1846, 1847 in science and the list of years in science.
Astronomy June 1 - Urbain Le Verrier predicts the existence and location of Neptune from irregularities in the orbit of Uranus August 31 – Urbain Le Verrier publishes full details of the predicted orbit and the mass of the new planet September 23 - Johann Galle discovers Neptune October 10 - William Lassell discovers Triton , Neptune’s moon Awards Copley Medal: Urbain Le Verrier Wollaston Medal: William Lonsdale Births December 12 – Eugen Baumann, chemist († 1896) Deaths March 17 - Friedrich Bessel, mathematician (* 1784)
