For this week's APOD, I chose the picture called "The Solstice Moon's Eclipse", uploaded on December 23, 2010. It was taken from Georgia, and it captures the moon during its lunar eclipse.
On Tuesday morning, the full moon moved into Earth's shadow, starting a lunar eclipse. A total lunar eclipse is when the moon passes behind the Earth so that the Earth completely blocks the Sun's rays from reaching the moon. This lunar eclipse in particular happened to occur during the December Solstice, which is why it was such a special eclipse. The moon eventually became reddened into a coppery disk, because of light filtering into the Earth's umbra, or the Earth's central shadow. The left side of the moon appears darker because it passes closer to the Earth's umbra.
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