UK / England: Edmond Halley (1656 - 1742), English astronomer, geophysicist, mathematician, meteorologist, and physicist best known for computing the orbit of the eponymous Halley's Comet. Oil painting by Richard Phillips (1681 - 1742), c. 1720, National

Halley's Comet or Comet Halley is a short-period comet visible from Earth every 75–76 years. Halley is the only short-period comet that is clearly visible to the naked eye from Earth, and the only naked-eye comet that might appear twice in a human lifetime. Halley last appeared in the inner Solar System in 1986 and will next appear in mid-2061.

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Pictures From History