Editing Venus
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Though [[Mercury]] is closer to the Sun, it doesn't have an atmosphere to retain all the [[heat]]. In contrast, Venus has a dense atmosphere that retains all the heat on the planet. Besides that, due to the volcanic activities the Venusian atmosphere has more [[carbon dioxide]] in it. It is believed that during the formation of the planet, Venus might have had [[ocean]]s, which later boiled and evaporated due to the high temperature.<ref>Ingersoll, Andrew P. "The Runaway Greenhouse: A History Of Water On Venus". Journal of the Atmospheric Sciences 26.6 (1969): 1191-1198. Web. 12 Jan. 2017.</ref> The [[water vapour]] should have [[photodissociation|photodissociated]] into [[hydrogen]] and [[oxygen]]. And the oxygen should have [[oxidation|oxidized]] surface minerals, releasing carbon dioxide, a [[greenhouse gas]] into Venus's atmosphere. The increase in the temperature due to the [[greenhouse effect]] would then evaporate more water into water vapour, another greenhouse gas, and would have enabled a positive feedback on the carbon dioxide-rich atmosphere to form a runaway greenhouse effect that makes Venus, the hottest planet in the solar system. | Though [[Mercury]] is closer to the Sun, it doesn't have an atmosphere to retain all the [[heat]]. In contrast, Venus has a dense atmosphere that retains all the heat on the planet. Besides that, due to the volcanic activities the Venusian atmosphere has more [[carbon dioxide]] in it. It is believed that during the formation of the planet, Venus might have had [[ocean]]s, which later boiled and evaporated due to the high temperature.<ref>Ingersoll, Andrew P. "The Runaway Greenhouse: A History Of Water On Venus". Journal of the Atmospheric Sciences 26.6 (1969): 1191-1198. Web. 12 Jan. 2017.</ref> The [[water vapour]] should have [[photodissociation|photodissociated]] into [[hydrogen]] and [[oxygen]]. And the oxygen should have [[oxidation|oxidized]] surface minerals, releasing carbon dioxide, a [[greenhouse gas]] into Venus's atmosphere. The increase in the temperature due to the [[greenhouse effect]] would then evaporate more water into water vapour, another greenhouse gas, and would have enabled a positive feedback on the carbon dioxide-rich atmosphere to form a runaway greenhouse effect that makes Venus, the hottest planet in the solar system. | ||
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== References == | == References == | ||
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