December 16, 2011: http://apod.nasa.gov/apod/
The APOD for Decemeber 16th, 2011 is that of a composite picture recorded 10 days earlir as the moon rose behind the Zagros mountains of Iran. This led to a very strange phenomenon of a fait red light. A total lunar eclipse was already in progress. The image combines 500 successive frames taken in the twilight of the eclipse as it climbed over the rough landscape. THe eclipsed moon is red becasue the earth's Umbral Shadow is infused with a faint red light. Sunsets and sunrises are reddened because the Earth's atmosphere scatters blue light more strongly than red light.
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