Manufacturing an Silicon X-Ray Optic (IMAGE) NASA/Goddard Space Flight Center Caption Scientist Will Zhang has created a manufacturing facility to create a new-fangled X-ray optic made of silicon. This image shows the buffing machine to remove imperfections from the mirror's surface. Credit Credits: NASA/W. Hrybyk Usage Restrictions None License Licensed 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.