Edmond Halley

Edmond Halley was an English astronomer and the second Astronomer Royal. Recognising that several recorded comets were one body on a 76-year orbit, he predicted its return in 1758 — confirmed after his death, and now called Halley's Comet. He also paid for and shepherded the publication of Newton's Principia, which might otherwise never have appeared.

• Predicted the return of the comet that bears his name
• Funded and encouraged the publication of Newton's Principia
• Catalogued the southern stars from Saint Helena

• The Periodicity of Halley's Comet1705 CE

• Namesake ofHalley's Comet
• Collaborated withIsaac Newton
• Part ofThe Scientific Revolution
• Collaborated withIsaac Newton
• ObservedHalley's Comet
• DiscoveredThe Periodicity of Halley's Comet