Colossal Particle Accelerator (IMAGE) University of Alberta Caption This is an artist's rendering of the natural space synchrotron accelerator that exists in the Earth's magnetosphere. Credit NASA Usage Restrictions Photo file credit to NASA 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.