This mosaic picture of the Moon was compiled from 18 images taken with a green filter by the Galileo spacecraft’s imaging system during its flyby on December 7, 1992. The north polar region is near the top part of the mosaic, which also shows Mare Imbrium, the dark area on the left; Mare Serenitatis at center; and Mare Crisium, the circular dark area to the right. Bright crater rim and ray deposits are from Copernicus, an impact crater 96 kilometers (60 miles) in diameter.