Giant Plume from Io's Tvashtar Volcano (IMAGE) NASA/Goddard Space Flight Center Caption This five-frame sequence of images from the New Horizons spacecraft captures the giant plume from Io's Tvashtar volcano. Credit Credits: NASA/JHU Applied Physics Laboratory/Southwest Research Institute 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.