All You. All New Pricing. No Tricky Discount Games. View Details

PromoID:15487845145###Brand:APC###Zone:US###Channel:SITEWIDE###Sub-channel:###AID:NULL###Coupon:NULL###Offer:50% Off Everything###MSG:50% OFF EVERYTHING###CMS:banner

fil_get

Photographic Print

Waning crescent Moon. Image 26 of 27. Optical image of a waning (decreasing in apparent size) crescent Moon 26 days into its 28day cycle. The lunar phases arise as the Moons orbit of the Earth shows the Earthfacing side moving into and out of the light of the Sun. This Earthfacing 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 daynight line (terminator) marks the lunar sunset. The Moon is crescent when it is less than half full. Taken in October 2001. A sequence of the monthly cycle of Moon phases is shown on images R340644670.


Work by Eckhard Slawik

View All

Related Categories