MMS Flight Formation (IMAGE) University of Maryland Caption The four MMS spacecraft fly in a tightly controlled tetrahedral (pyramid) shape that can be re-scaled by changing the distances between each spacecraft. MMS can image the behavior of electrons within this tetrahedron once every 30 milliseconds -- providing 100X greater resolution than previous efforts. Credit NASA GSFC 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.