The two dominant colours on the moon’s surface are dullish grey and pitch black – but only to the naked eye. The geological materials and phenomena that shaped the moon display such a wealth of differences that space geologists (in this case selenologists) have had to code them in a wide range of colours. An unintended side-effect of geological clarity is this joyous jumble of colour-coded impact craters, reminiscent of Jackson Pollock’s action painting. Source: US Geological Survey, first published in Strange Maps #
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