Swift J1644+57 (IMAGE) NASA/Goddard Space Flight Center Caption This illustration highlights the principal features of Swift J1644+57 and summarizes what astronomers have discovered about it. Credit Credit: NASA's Goddard Space Flight Center 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.