Magellanic Diagram (IMAGE) University of Wisconsin-Madison Caption An image of the Magellanic Stream with the Leading Arm, a cloud of gas ripped from the Large Magellanic Cloud (LMC) and Small Magellanic Cloud (SMC) system. The quasars used in the current study to analyze the Leading Arm are labeled A-C. Credit Space Telescope Science Institute Usage Restrictions Credit: Space Telescope Science Institute 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.