Jupiter's Tug-of-War (IMAGE) University of Leicester Caption Illustration of the mechanism behind Jupiter’s ‘tug-of-war’ – the delicate current cycle driven by Jupiter’s rapid rotation and the release of sulphur and oxygen from volcanoes on its moon, Io. Credit: Emma Bunce/Stanley Cowley/Jonathan Nichols/University of Leicester Credit Emma Bunce/Stanley Cowley/Jonathan Nichols/University of Leicester Usage Restrictions Credit: Emma Bunce/Stanley Cowley/Jonathan Nichols/University of Leicester License Original 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.