CAPER (IMAGE) NASA/Goddard Space Flight Center Caption Part of CAPER, short for Cusp Alfven and Plasma Electrodynamics Rocket, is suspended from the rail that will carry the rocket out to the launch pad. CAPER's launch window will open Nov. 27, 2015, and scientists will have to wait for good weather conditions and a daytime cusp aurora before they can send their payload flying through the aurora borealis. CAPER will study the electromagnetic waves that both create the cusp aurora and send electrons flying out into space. Credit Credits: NASA/Nate Empson 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.