The moon may still be geologically active, judging from the way the lunar far side is wrinkling as the moon contracts. At least, that's what planetary scientists who have discovered 266 lunar "wrinkle ridges," say, as all of these ridges appear to have formed during the past 160 million years in the rare volcanic plains on the lunar far side.
"Knowing that the moon is still geologically dynamic has very real implications for where we’re going to put our astronauts, equipment and infrastructure on the moon," said one of those scientists, Jaclyn Clark of the University of Maryland, in a statement.
