15 day old moon,one day past full. Image 15 of 27. Waning (decreasing in apparent size) gibbous Moon 15 days into its 28-day cycle. The lunar phases arise as the Moons orbit of the Earth shows the Earth-facing side moving into and out of the light of the Sun. This Earth-facing side of the Moon is locked in place by the gravitational influence of the Earth. This results in a lunar day that equals the length of the lunar Earth orbit. On a waning Moon the day-night line (terminator) marks the lunar sunset. The Moon is gibbous when it is more than half full | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Landolfi, Larry |
Taille de l’image : | 3631 px × 2478 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : |
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