First Quarter Moon
by Miguel Claro/science Photo Library
Title
First Quarter Moon
Artist
Miguel Claro/science Photo Library
Medium
Photograph - Photograph
Description
First quarter Moon. The lunar phases arise as the Earth-Moon-Sun angle changes as the Moon orbits the Earth. This waxing Moon is 7 days into its 28-day cycle (first quarter). On a waxing Moon, the day-night line (terminator) marks the lunar dawn as sunlight advances over the Earth-facing side of the Moon. Photographed on 4 April 2017, from the Cumeada Observatory in the Dark Sky Alqueva Reserve, Portugal. For this image in landscape orientation, see C042/9619.
Uploaded
September 25th, 2019
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