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
Anders Sørensen Vedel Anders Sørensen Vedel Anders Sørensen Vedel (9 November 1542 – 13 February 1616) was a Danish priest and historian. He translated the "Gesta Danorum" by Saxo Grammaticus into Danish in 1575, and published the influential ""Hundredvisebogen"" in 1591. Anders Sørensen was born in Vejle, from which place the Vedel name comes. 14 years old he moved to study in Ribe, and after finishing his education he moved on to Copenhagen University in 1561. In 1562, he was the tutor of astronomer Tycho Brahe on Brahe's Grand Tour in Europe, forming a lasting bond of friendship with him. Vedel started studying