Descrizione : Cap Canaveral post stamp and Mariner 5 satellite.

Mariner 5 reached Venus on 19 October and began transmitting data. Closest approach at an altitude of 4094 km occurred at 17:34:56 UT. At this time Venus was approximately 79.5 million km from Earth. Mariner 5 passed in front of Venus` orbit and was occulted from Earth for approximately 26 minutes. Data transmissions occurred after the encounter. Contact was lost on 4 December 1967, but was temporarily regained on 14 October 1968. The spacecraft is now in heliocentric orbit. The spacecraft instruments measured both interplanetary and Venusian magnetic fields, charged particles, and plasmas, as well as the radio refractivity and UV emissions of the Venusian atmosphere. The mission was termed a success.

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MARINER 5 (VENUSIAN PROBE) · ATLAS SLV3