Halley, Edmond Sir Edmond Halley did more than calculate the return of the comet named after him. Learn more about his work with the motion of stars, and his study of Mercury and Venus. http://sirius.phy.hr/~dpaar/fizicari/xhalley.html Phy.hr~Site InfoWhoisTrace RouteRBL Check
Adams, John Couch The first to mathematically predict an unknown planet, his calculations were ignored and someone else discovered Neptune. http://starchild.gsfc.nasa.gov/docs/StarChild/whos_who_level2/adams.html Nasa.gov~Site InfoWhoisTrace RouteRBL Check
Bell Burnel, Jocelyn The radio astronomer who discovered what turned out to be neutron stars, also called pulsars. http://starchild.gsfc.nasa.gov/docs/StarChild/whos_who_level2/bell.html Nasa.gov~Site InfoWhoisTrace RouteRBL Check
Le Verrier, Urbain The French astronomer whose mathematical predictions led to the discovery of Neptune. http://starchild.gsfc.nasa.gov/docs/StarChild/whos_who_level2/leverrier.html Nasa.gov~Site InfoWhoisTrace RouteRBL Check
Tombaugh, Clyde The discoverer of Pluto started out as an amateur who built his own telescopes. http://starchild.gsfc.nasa.gov/docs/StarChild/whos_who_level2/tombaugh.html Nasa.gov~Site InfoWhoisTrace RouteRBL Check
Ptolemy An astronomer, mathematician and geographer who lived in Alexandria, Egypt. We know very little more of his life. He classified the Greek geocentric view of the universe, and calculated the apparent motions of the planets. http://space.about.com/cs/astronomerbios/a/ptolemybio.htm About.com~Site InfoWhoisTrace RouteRBL Check