Here are details about a :
Space commemorative cover
or Space Cover.
Cosmodrom : USA
Date of Cancellation: May 22, 1978
Kind of Event : Launch
Launch pad : USA KSC (FL)
habité?/manned?: robot
Mission type : Venus
ou?/where?: au sol - ground
autographe?: non - noneDescription : Mountain View post stamp and Pioneer Venus 1 Orbiter to study Venus carbon atmosphere and supply studies to Earth weather systems.
The Pioneer Venus Orbiter was the first of a two-spacecraft orbiter-probe combination designed to conduct a comprehensive investigation of the atmosphere of Venus.
Pioneer Venus Orbiter measured the detailed structure of the upper atmosphere and ionosphere of Venus, investigated the interaction of the solar wind with the ionosphere and the magnetic field in the vicinity of Venus, determined the characteristics of the atmosphere and surface of Venus on a planetary scale, determined the planet’s gravitational field harmonics from perturbations of the spacecraft orbit, and detected gamma-ray bursts. UV observations of comets have also been made. From Venus orbit insertion on December 4, 1978 to July 1980 periapsis was held between 142 and 253 km to facilitate radar and ionospheric measurements.
The orbiter cost $125 million to build and operate for the first 10 years. Keyword(s) :
#NASA,
#Planet,
#Probe,
#Satellite,
#Venus and probes, This is OUTSIDE of a Space Revue. Last modified: 05/07/2015 @ 14h30
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Page : future · Ref: USA 1138 ASpace Event : PIONEER 12 (PIONEER VENUS 1) · VENUS ORBITER · ATLAS SLV3D
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