EVEX Team Readies the Launcher (IMAGE) NASA/Goddard Space Flight Center Caption In the Marshall Islands at a range in Kwajalein, the EVEX (Equatorial Vortex Experiment) team readies the launcher. The mission consists of two sounding rockets to study the ionosphere that will launch minutes apart during a launch window of April 27 to May 10, 2013. Credit Credit: NASA/ John Hickman 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.