NASA's Van Allen Probes Orbit Through 2 Giant Radiation Belts (image) NASA/Goddard Space Flight Center Share Print E-Mail Caption NASA's Van Allen Probes orbit through two giant radiation belts that surround Earth. Their observations help improve computer simulations of events in the belts that can affect technology in space. Credit John Hopkins University Applied Physics Laboratory/NASA Usage Restrictions None Share Print E-Mail 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.