Venera ll, an unmanned Soviet spaceship, blasted off September 9, 1978. It traveled about 3 1/2 months to Venus and ejected the lander. The lander entered the Venusian atmosphere on December 25, 1978. It transmitted data for 95 minutes until the flight platform moved out of range.
The flight platform continued on and settled into a heliocentric orbit, detecting solar winds and gamma ray bursts. Its mission ended February 1, 1980.
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