Modulated X-ray Source (image) NASA/Goddard Space Flight Center Share Print E-Mail Caption This image shows the Modulated X-ray Source, a key component in NASA's first-ever demonstration of X-ray communication in space. Credit Credits: NASA/W. Hrybyk 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.