Original: Edmond Halley FRS (8 November 1656 â "14 January 1742) was an English astronomer, geophysicist, mathematician, meteorologist, and physicist who is best known for computing the orbit of the eponymous Halley's comet.
Simplified: He was also a mathematician, meteorologist, and physicist. Halley is best known for computing the orbit of the comet named after him: Halley's Comet.