#FromTheArchives: Geos-1 spin test at ESA ESTEC, view from top camera, 4 February 1977. The Geos satellites were designed to study the particles, fields and plasmas in Earth’s magnetosphere from geostationary orbit. Geos-1 was launched from Cape Canaveral on 20 April 1977 and its mission ended in April 1980, Geos-2 was launched 14 July 1978, mission ended October 1985. 🔗ship.esa.int/ISS/view.jsp?d…
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