Halley's Comet, 1910. Creator: George Willis Ritchey.

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Halley's Comet, 1910. Halley's Comet was photographed by Dr George Willis Ritchey at Mount Wilson Observatory, California, USA. Halley's Comet is visible from Earth every 75-76 years. It is the only known short-period comet that is regularly visible to the naked eye, and the only naked-eye comet that might appear twice in a human lifetime. Halley last appeared in the inner parts of the Solar System in 1986 and will next appear in mid-2061. Its periodicity was first recognised by English astronomer Edmond Halley (1656-1742).

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Size: 3966px × 5142px
Location:
Photo credit: © Heritage Space/Heritage Images / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: .., 1910s, 20th, administration, aeronautics, century, color, colour, comet, edmond, edmund, exploration, george, gw, halley, heritage, nasa, national, natural, phenomena, photograph, photography, ritchey, space, stars, willis