Description : 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.
Data were acquired on a science-problem-oriented basis, with closely coordinated operations of the various instruments, both satellites, and supportive experiments. Measurements were temporarily stored on tape recorders before transmission at an 8:1 playback-to-record ratio. Since commands were also stored in a command memory unit, spacecraft operations were not real time.
Greenbelt DE 1 & 2 to study interaction between earth’s magnetosphere, ionosphere and atmosphere in polar coplanar orbits launched from Vandenberg by Thor Delta.

USA 1547 A - picture enhanced ?

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Space Event :

DYNAMICS EXPLORER (DE 1 & 2)