Waning crescent Moon. As the Moon orbits the Earth, the amount of sunlight on its visible hemisphere varies in a regular 28-day cycle. This is a wanin

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Waning crescent Moon. As the Moon orbits the Earth, the amount of sunlight on its visible hemisphere varies in a regular 28-day cycle. This is a waning crescent Moon, 24 days into the cycle. As the cycle progresses, darkness encroaches (from left) as the lunar night falls. Photographed in the southern hemisphere.

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Size: 2587px × 3396px
Photo credit: © JOHN SANFORD/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: 24, astronomical, astronomy, crater, craters, crescent, day, days, hemisphere, lunar, mare, maria, moon, moonlight, night, optical, phase, phases, science, sky, solar, southern, space, system, telescope, twenty-, waning