Skip to main content

Posted by Specola

NASA Astronomy Picture of the Day:

Why is a thin crescent moon never seen far from a horizon? Because the only geometry that gives a thin crescent lunar phase occurs when the Moon appears close to the Sun in the sky. The crescent is not caused by the shadow of the Earth, but by seeing only a small part of the Moon directly illuminated by the Sun. Moreover, the thickest part of the crescent always occurs in the direction of the Sun. In the evening, a thin crescent Moon will set shortly after the Sun and not be seen for the rest of the night. Alternatively, in the morning, a crescent Moon will rise shortly before the Sun after not being seen for most of the night. Pictured two weeks ago, a crescent moon was captured near the horizon, just before sunrise, far behind remnants of the ancient Temple of Poseidon in Greece.

Photo by Elias Chasiotis

Read more from Pepe's Painting LLC

Click the Image to learn more about us

Powered by Volunteers | 360-794-7959

Snohomish, Skagit and Island County

Giving Kids in Need the Chance to Read
  Non-profit organization - Seattle, WA

Hunger impacts all of us | 360-435-1631

FLO JAPANESE RESTAURANT
425-453-4005 - 1150 106th Ave NE Bellevue, WA 98004