ARTEMIS Probe Orbiting Moon (IMAGE) University of California - Berkeley Caption An artist's concept of one of the twin ARTEMIS probes in orbit around the moon. Formerly part of the THEMIS suite of five probes in Earth orbit, these two micro-satellites will now observe the solar wind's impact on the Earth's magnetic field at a much greater distance from Earth, and the wake left by the moon as it travels through the magnetosphere. Credit NASA Goddard Space Flight Center 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.