When an extraterrestrial object slams into the Earth, it sends molten rock high into the atmosphere. That debris cools and re-crystallizes and falls back down to Earth. Tiny glass beads that form in this process are called microtektites, and researchers in Florida have found microtektites inside fossilized clams.
Written by Evan Gough for Universe Today August 16, 2019
Wake up with the smartest email in your inbox.
Our Best Articles Daily