05-27-2020, 10:42 AM
(05-26-2020, 07:08 PM)stevebowers Wrote: Here's an atmosphere diagram from Forbes.com that shows how Earth's atmosphere has changed over time; Venus's atmosphere may have been similar, especially for the first couple of billion years. But too much greenhouse gas would accelerate the change to a Cytherian-type atmosphere, so either the water disappeared long before 700 mya, or the greenhouse gas content of Venus became very low very early on.
So to get a Venus that's human habitable c2000AD, it'd need to be something like a Campian Gaian world (low in surface water, high in albedo), perhaps specifically like Cenote where most carbon is locked up as carbonates?
Mike Miller, Materials Engineer
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"Everbody's always in favor of saving Hitler's brain, but when you put it in the body of a great white shark, oh, suddenly you've gone too far." -- Professor Farnsworth, Futurama
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"Everbody's always in favor of saving Hitler's brain, but when you put it in the body of a great white shark, oh, suddenly you've gone too far." -- Professor Farnsworth, Futurama