... Moon . ... Moon Maps . ... Big splat" may explain the Moon's mountainous farside . ... Instead, most of the colliding material is piled onto the impacted hemisphere as a thick new layer of solid crust, forming a mountainous region comparable in extent to the lunar farside highlands. т??Of course, impact modelers try to explain everything with collisions,т?? said Asphaug. т??In this case, it requires an odd collision: Being slow, it does not form a crater, but splats material onto one side. ...