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  • BBC Sky at Night

    MOONWATCH

    Jul 16, 2020 2 minutes

    Archimedes is a large, lava-flooded feature located in the eastern region of Mare Imbrium. It’s also the largest feature within the boundary of this immense 1,250km-diameter sea of solidified lava. Archimedes has a curious appearance with a rim that looks more like a raised ring surrounding a remarkably flat base.

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