CubeSats (IMAGE) NASA/Goddard Space Flight Center Caption A fully implemented RAVAN mission entails a constellation of multiple RAVAN satellites distributed around the planet to measure Earth's outgoing energy globally. Credit Credits: Johns Hopkins University Applied Physics Laboratory/Blue Canyon Technologies 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.