Glasses strewn across the desert (IMAGE) Brown University Caption Deposits of dark silicate glass are strewn across a 75-kilometer corridor in the Atacama Desert in northern Chile. New research shows that those glasses were likely formed by the heat of an ancient comet exploding above the surface. Credit P.H. Schultz/Brown University Usage Restrictions None License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.