[Swordmaker]

Supposedly, ESA is looking into how Venus could give hints to how Earth could become if global warming goes haywire (albeit, this would be a very tiny part of their mission). Since Venus is only a tad bit smaller than Earth, and is commonly referred to as Earth's twin.

Green house effect cannot be the explanation for Venus' hot temperature... it is exothermic... giving off more heat that it receives from the Sun. Either there is another source of energy or the heat is a remnant of an even hotter past.

[burzum]

Green house effect cannot be the explanation for Venus' hot temperature... it is exothermic... giving off more heat that it receives from the Sun. Either there is another source of energy or the heat is a remnant of an even hotter past.

I doubt you have a clue about what you are talking about. But giving you the benefit of the doubt I should note that every planet emits more heat than it receives from the Sun. In the case of the rocky planets, radioactive decay of certain elements accounts for the energy difference, and for the gas and ice giants, their continuing compression accounts for the heat.

This does not mean that CO2 in the atmosphere can't explain the atmosphere. Only someone who doesn't know anything about planetary science or even basic thermodynamics would say that.