Why is the far side of the Moon so heav­ily cratered?

BBC Earth (Asia) - - Q & A -

It’s of­ten thought that the far side is more ex­posed to in­com­ing im­pacts, leav­ing it more bat­tered than the side fac­ing us. In fact, cal­cu­la­tions show both sides have been equally af­fected. The key dif­fer­ence is the far side has a much thicker crust. This thick­ness has pre­vented fresh, molten rock emerg­ing from be­low to cover as many of its craters. RM

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