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1P/Halley a.k.a. Halley's Comet: Halley's Comet or Comet Halley, officially designated 1P/Halley, is the best-known of the short-period comets and is 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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Google previewEncyclopedia of Space and Astronomy (2009)

by Joseph A. Angelo

Comet Halley (1P/Halley) The most famous ...

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Quotes about 1P/Halley

Scarce any problem will appear more hard and difficult, than that of determining the distance of the Sun from the Earth very near the truth: but even this... will without much labour be effected. (Edmond Halley)
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