Doug Rowland, NASA (IMAGE) NASA/Goddard Space Flight Center Caption Principal Investigator Doug Rowland is pictured here with electric-field booms that flew on VISIONS-1. His follow-on sounding-rocket mission will fly similar booms to measure the electric fields that energize oxygen ions and accelerate them against Earth's gravity. Credit Credits: NASA/W. Hrybyk 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.