”After an impact, rebounding molten rock piles up in a central peak and sometimes collapses into a peak ring—one way todistinguish an impact crater from a volcano.”
I’ve always wondered why so many craters on the Moon have small peaks in the center. This answers that.
4 posted on 11/14/2018 3:14:15 PM PST by noiseman
(The only thing necessary for the triumph of evil is for good men to do nothing.`)
