Field of Galaxies (IMAGE) NASA/Goddard Space Flight Center Caption The galaxy cluster SDSS J1110+6459 is located about 6 billion light-years from Earth and contains hundreds of galaxies. At left, a distinctive blue arc is actually composed of three separate images of a more distant background galaxy called SGAS J111020.0+645950.8. The background galaxy has been magnified, distorted, and multiply imaged by the gravity of the galaxy cluster in a process known as gravitational lensing. Credit NASA, ESA, and T. Johnson (University of Michigan) 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.