CLYC Crystals (image) NASA/Johnson Space Center Share Print E-Mail Caption CLYC crystals grown in on Earth often contain imperfections such as inclusions (left), cracks (middle) and grain boundaries (right). The goal is to understand their formation without the interference of convection to improve crystal growth on Earth. Credit Alexei Churilov Usage Restrictions None Share Print E-Mail 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.