Third Quarter Moon
by Nasa's Scientific Visualization Studio/science Photo Library
Title
Third Quarter Moon
Artist
Nasa's Scientific Visualization Studio/science Photo Library
Medium
Photograph - Photograph
Description
Third quarter Moon. The lunar phases arise as the Earth-Moon-Sun angle changes as the Moon orbits the Earth. This waning Moon is 22 days into its 28-day cycle (third quarter). On a waning Moon, the day-night line (terminator) marks the lunar sunset as night advances over the Earth-facing side of the Moon. This image, published in 2015, uses data from the Lunar Reconnaissance Orbiter. The image is part of a sequence of lunar phases (see images C030/3708-3714), orientated for the northern hemisphere.
Uploaded
September 23rd, 2018
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