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  2. Atmosphere of Venus - Wikipedia

    en.wikipedia.org/wiki/Atmosphere_of_Venus

    The early Earth during the Hadean eon is believed by most scientists to have had a Venus-like atmosphere, with roughly 100 bar of CO 2 and a surface temperature of 230 °C, and possibly even sulfuric acid clouds, until about 4.0 billion years ago, by which time plate tectonics were in full force and together with the early water oceans, removed ...

  3. Water on terrestrial planets of the Solar System - Wikipedia

    en.wikipedia.org/wiki/Water_on_terrestrial...

    The current Venusian atmosphere has only ~200 mg/kg H 2 O(g) in its atmosphere and the pressure and temperature regime makes water unstable on its surface. Nevertheless, assuming that early Venus's H 2 O had a ratio between deuterium (heavy hydrogen, 2H) and hydrogen (1H) similar to Earth's Vienna Standard Mean Ocean Water of 1.6×10 −4, [7] the current D/H ratio in the Venusian atmosphere ...

  4. Water on Venus - Wikipedia

    en.wikipedia.org/wiki/Water_on_Venus

    Studies have proven that Venus needed liquid water three billion years ago to be able to have such high concentrations of water-related minerals and gases on its surface and in its atmosphere today. However, such studies proved that the liquids would only have lasted up until 700 million to 750 million years ago, before eventually evaporating ...

  5. Scientists detect oxygen in noxious atmosphere of Venus - AOL

    www.aol.com/news/scientists-detect-oxygen...

    Its thick and noxious atmosphere is dominated by carbon dioxide - 96.5% - with lesser amounts of nitrogen and trace gases. In fact, with Venus getting far less scientific attention than other ...

  6. Terraforming of Venus - Wikipedia

    en.wikipedia.org/wiki/Terraforming_of_Venus

    This requires Venus's temperature to be reduced, first to the liquefaction point, requiring a temperature less than 304.128(15) K [32] (30.978(15) °C or 87.761(27) °F) and partial pressures of CO 2 to bring the atmospheric pressure down to 73.773(30) bar [32] (carbon dioxide's critical point); and from there reducing the temperature below 216 ...

  7. Life on Venus - Wikipedia

    en.wikipedia.org/wiki/Life_on_Venus

    With extreme surface temperatures reaching nearly 735 K (462 °C; 863 °F) and an atmospheric pressure 92 times that of Earth, the conditions on Venus make water-based life as we know it unlikely on the surface of the planet.

  8. Extraterrestrial atmosphere - Wikipedia

    en.wikipedia.org/wiki/Extraterrestrial_atmosphere

    Atmosphere of Venus in UV, by Pioneer Venus Orbiter in 1979. Venus' atmosphere is mostly composed of carbon dioxide. It contains minor amounts of nitrogen and other trace elements, including compounds based on hydrogen, nitrogen, sulphur, carbon, and oxygen. The atmosphere of Venus is much hotter and denser than that of Earth, though shallower.

  9. Venera 4 - Wikipedia

    en.wikipedia.org/wiki/Venera_4

    Venera 4 (Russian: Венера-4, lit. 'Venus-4'), also designated 4V-1 No.310, was a probe in the Soviet Venera program for the exploration of Venus.The probe comprised a lander, designed to enter the Venusian atmosphere and parachute to the surface, and a carrier/flyby spacecraft, which carried the lander to Venus and served as a communications relay for it.

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