As we age, we get smaller, we get wrinkles, and we get shaky. So, apparently, does the moon, as lunar scientists say that a Shrinking moon may explain lunar quakes.
Thomas Watters of the Smithsonian Institution in Washington, DC, and colleagues say the wrinkles likely formed as the moon cooled and contracted.
The features are surprisingly recent, having formed no more than 1 billion years ago. That estimate is based on the fact that they partly destroyed some pre-existing small craters that seem to be no more than 1 billion years old. “The moon may still be geologically and tectonically active and still shrinking today,” Watters said in a teleconference with reporters on Thursday.
What a nice way to say it. The next time someone points out that I don’t look as young as I used to, I’ll just say, “That’s because I’m still tectonically active.”
That’s a continental plate on top of my head. It only LOOKS like the surface of the moon.