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The Sciences

Near and Far

Cosmic VarianceBy Sean CarrollOctober 31, 2006 7:59 AM


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Confession time: I didn't successfully figure out what these two crescents were, until I read the explanation at Astronomy Picture of the Day. Can you?


The big one is the Moon; the small one is Venus. A few minutes after this picture was taken, Venus was eclipsed by the Moon.

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