The Moon is in its waning gibbous phase 19.7 days past new, 4.4 days past full.
Here we see a close-up of the terminator, the sunset line where strong shadows
show craters in sharp relief. The Imbrium basin is at top left (surrounded by
the lunar Apennines), with Mare Serenitatis
and Mare Tranquillitatis curving down and to the right. Dark Mare Vaporum is just above center.
Craters at the terminator run from Eudoxus at the top to Zagut at bottom. The huge splash
mark at far left surrounds Copernicus.
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