05-30-2014, 08:17 PM | #26 |
Problematic Fave
Join Date: Sep 2011
Location: VA
Posts: 3,199
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I fail to see why you think it would be easier to reduce the temperature from 600 degrees Celsius to 20 degrees Celsius than to increase the temperature from -80 degrees Celsius to 20 degrees Celsius.
Venus is not close enough to the Sun to get a drastically increased amount of solar energy. I may be closer than you to Chernobyl, but that doesn't mean that I'm being irradiated as we speak. Venus is about .72 AU from the Sun. If you can pull a ton of solar energy out of that .28 AU distance, be my guest.
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05-30-2014, 08:53 PM | #27 | ||
我が名は勇者王!
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This is less of a problem with Venus because Venus retains heat much more strongly than Earth, and so conditions on Venus would take centuries and a LOT of solar shielding to have a noticeable change in climate. And, it would be for the positive too, since it would eventually cool the planet enough to not need the cloud cities.
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05-31-2014, 04:57 AM | #28 | |
Archbishop of Banterbury
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Dopple is correct about the upper atmosphere of Venus, iirc all you'd need up there is an oxygen tank. Also that distance difference roughly doubles the amount of solar energy falling on any given surface, which is a not insignificant difference.
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