The moon is shrinking, and the Earth is shaping it
~!!~This shrinkage is nothing to be alarmed about// Here*s what*s happening: the core of the moon is cooling, and when a mass cools, it loses volume ~~ think of how water shrinks as it freezes into ice cubes// As the moon*s core cools, the partially molten regions in its mantle solidify//
~!!~This causes the moon to shrink a little, its crust **wrinkling** as it settles into its new size// These wrinkles form a type of cliff called **lobate scarps**, like those seen on Mercury, usually less than 10 kilometres (6//2 miles) long and just tens of metres or yards high//