What year did Edmond Halley discover Halley's Comet?

Answer

Edmond Halley was not the first scientist to observe Halley's Comet, but he discovered that recorded comet sightings in 1531, 1607 and 1682 were part of a recurring orbital cycle, according to Encyclopaedia Britannica. He published his findings in 1705 and correctly predicted the comet's next appearance in 1758.

Halley compiled his calculations in "A Synopsis of the Astronomy of Comets," detailing the orbital characteristics of 24 comets. Halley's comet appears roughly every 76 years and was officially named after Halley in 1759. His research has helped scientists calculate and identify earlier sightings of the comet. The earliest confirmed record dates back to 240 BCE and was observed by Chinese astronomers, the Encyclopaedia Britannica states.

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