NASA says the moon is shrinking and experiencing "moon tremors"

NASA said the moon was shrinking and that it could create what is called "moon tremors". Scientists say that the moon's interior is getting cooler and shrinking like a grape. The narrowing caused ridges on the moon's surface called "thrust faults" – where part of the crust is pushed onto a nearby part. Scientists now believe that these faults are at the origin of tremors.