Antti Pulkkinen, NASA (IMAGE) NASA/Goddard Space Flight Center Caption Goddard space scientist Antti Pulkkinen researches space weather phenomena that affect power grids. In addition to developing systems that simulate where and when power grids will experience geomagnetically induced currents, Pulkkinen works with the power engineering community to help develop standards and guidelines to keep North American power grids stable during geomagnetic storms. Credit Credits: NASA's Goddard Space Flight Center/Bill 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.