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The first "certain" appearance of Halley's Comet is from 240 BC, in the Chinese chronicle Records of the Grand Historian or Shiji, which describes a comet that appeared "in the east and moved north".

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14y ago
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1mo ago

Halley's comet was first identified and recorded by Chinese astronomers in 240 BC. It is named after Edmond Halley, an English astronomer who calculated its periodicity and predicted its return in 1758.

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7y ago
1704Halley's Comet was discovered in 1705 by Edmond Halley
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15y ago

It is seen in 1531, and followed a 76-year orbit. There is no accurate date on when the comet is first seen.

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Q: When was halleys comet discovered?
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