Glass lamellae in a quartz crystal (IMAGE) Friedrich-Schiller-Universitaet Jena Caption The simulated asteroid impact creates tiny glass lamellae in the quartz crystals studied, only tens of nanometers wide, which are only visible under the electron microscope. Credit Image: Falko Langenhorst, Christoph Otzen (Universität Jena) 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.