Astronomy Picture of the Day: Saguaro Moon Feature Summary

Physics in Your World
Astronomy Picture of the Day: Saguaro Moon
This Astronomy Picture of the Day shows a full moon, illuminated by reflected sunlight--for more on this image, see Astronomy Picture of the Day: Saguaro Moon. But we can also see the moon by reflected Earthshine, as shown in this APOD of a new moon.

Compare the pattern of the maria (the smooth dark surfaces on the moon) in these images. The moon rotates with the same part facing Earth--is that consistent with what you see? To learn more about this, and about tides in the solid Earth and moon, see this Bad Astronomy post.
image credit: <a href="" target="_blank">Stefan Seip -</a>; <a href="" target="_blank">image source</a>; <a href="" target="_blank">larger image</a>
image credit: Stefan Seip -; image source; larger image
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April 16, 2010 - May 1, 2010