The planet Venus: one of a series of NASA facts about the exploration of Venus
National Aeronautics and Space Administration, 1978 - Science - 8 pages
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225 Earth days atmosphere of carbon atmosphere of Venus atmospheric gases brightest carbon dioxide chemical reactions chlorine and fluorine clouds of Venus cold trap conjunction see Figure craters dark soil density droplets of sulfuric Earth and Sun Earth and Venus Earth's ionosphere elongation gas are located greenhouse effect Hazes incoming solar radiation inferior conjunction interplanetary space layers lf Venus lower atmosphere magnetic field Mars Mercury million km NASA's night side Noon orbit outgassed Path of Venus pictures Pioneer-Venus planet probably released questions about Venus Radar astronomers radiation and prevent radio waves region retrograde direction rocky Scientific American solar system solar wind Soviet Venera spacecraft spacecraft arrive spacecraft Figure spacecraft landed sulfuric acid clouds superior conjunction surface of Venus temperature of Venus today trap incoming solar ultraviolet light upper atmosphere Venera 9 Venus atmosphere Venus day Venus passes Venus rotates Venusian atmosphere water Weakly lonized weather wind speed