Cosmic Rays Turned Ancient Sand Into a Geological Time Machine “These incredibly durable minerals trap traces of krypton gas created when cosmic rays strike them at Earth’s surface, effectively turning each crystal into a “cosmic clock.”

Cosmic Rays Turned Ancient Sand Into a Geological Time Machine “These incredibly durable minerals trap traces of krypton gas created when cosmic rays strike them at Earth’s surface, effectively turning each crystal into a “cosmic clock.”

by Myztic-Seeker