Anders Johan Lexell Johan Stén (2015): A Comet of the Enlightenment. Anders Johan Lexell's Life and Discoveries. Basel: Birkhäuser. Anders Johan Lexell Anders Johan Lexell (24 December 1740 – ) was a Finnish-Swedish astronomer, mathematician, and physicist who spent most of his life in Imperial Russia, where he was known as Andrei Ivanovich Leksel (Андрей Иванович Лексель). Lexell made important discoveries in polygonometry and celestial mechanics; the latter led to a comet named in his honour. La Grande Encyclopédie states that he was the prominent mathematician of his time who contributed to spherical trigonometry with new and interesting solutions, which he took as
George Bishop (astronomer) long period of physical illness, but during which he retained his mental faculties, Bishop died on 14 June 1861 at the age of 76. George Bishop (astronomer) George Bishop (Leicester, 21 August 1785 – 14 June 1861), was a noted English astronomer of the nineteenth century. At the age of eighteen Bishop entered a British wine-making business in London, subsequently becoming its proprietor, during his tenure at which the business was so successful that its excise returns were said to exhibit half of all home-made wines as of his manufacture. Bishop's scientific career began with his admission to the Royal