2.2.0 spase://SMWG/Observatory/DE Dynamics Explorer Mission DE 2018-05-03T20:37:33.475 The Dynamics Explorer (DE) mission's general objective is to investigate the strong interactive processes coupling the hot, tenuous, convecting plasmas of the magnetosphere and the cooler, denser plasmas and gases corotating in the earth's ionosphere, upper atmosphere, and plasmasphere. Two satellites, DE 1 and DE 2, were launched together and were placed in polar coplanar orbits, permitting simultaneous measurements at high and low altitudes in the same field-line region. spase://SMWG/Person/Robert.A.Hoffman ProjectScientist Space Science Instrumentation Article https://spdf.gsfc.nasa.gov/pub/data/de/documents/HoffmanEtAl_1981_DESpacecraftAndGroundOps_SpaceScienceInstrumentation.pdf Detailed Information about the Dynamics Explorer mission. Earth.NearSurface