Cheseaux's comet, Lausanne, Switzerland, 8 March 1744.
© Science Museum / Science & Society Picture Library
Comet named after Swiss landowner, mathematician and astronomer Jean Philippe Loys de Cheseaux (1718-1751). Cheseaux observed this comet between December 1743 and March 1744. The comet had six tails, each 30,000,000 km (19,000,000 miles) long. In March of 1744 the comet was visible in full daylight, and was supposedly brighter than Jupiter. The comet is also known as C/1743 X1, or the Klinkenberg-De Cheseaux comet, after Dirk Klinkenberg (1709-1799) who discovered it. Illustration from 'The World of Comets' by Amedee Guillemin (1826-1893), published in London in 1877.