G2's Encounter with Sgr A* (image) Northwestern University Caption A simulation of the gas cloud G2's encounter with the supermassive black hole Sgr A*. The blue lines mark the orbits of the so-called "S" stars that are in close orbits around the black hole. Credit Image by ESO/MPE/Marc Schartmann Usage Restrictions Credit line must accompany image 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.