Jupiter and its Moon Europa (IMAGE) University of California - Los Angeles Caption An illustration of a plume at Jupiter's moon, Europa, encountered by NASA's Galileo spacecraft during its closest flyby. As confirmed by a computer simulation, the observed magnetic field topology (lines) and plasma density enhancement (colors on the lines) are consistent with perturbations generated by a plume. Credit NASA/JPL-Caltech and Xianzhe Jia/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.