What geological hypothesis explains why *maria* are less common on the far side?

Answer

The far side has a thicker crust preventing magma from erupting

The significant geological contrast suggests that the thinner crust on the near side permitted magma to rise and form the *maria*, a process that the thicker crust on the far side prevented from occurring on the same scale.

What geological hypothesis explains why *maria* are less common on the far side?
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