Swift Spacecraft and Gamma-Ray Burst (IMAGE) Penn State Caption This is an artist's rendering of the Swift spacecraft with a gamma-ray burst going off in the background. Credit Spectrum Astro Usage Restrictions The credit line must be published along with the image. 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.