The moon may look stable, but it is shrinking…but it’s pretty miniscule.
As its interior continues to cool and contract — it’s believed to have slimmed down by about 150 feet over the last few hundred million years — our solitary natural satellite is being rocked by moonquakes and its brittle, pockmarked crust crisscrossed by low ridges known as scarps, according to the research.
For more, check out this NBC News story.