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Paraterraforming is just other way to keep and regulate atmosphere. There are designs with equal value for Mercury without the necessity of roofing the world. Matter of money and aesthetics.
There is big difference between building flimsy parasols and soletas and huge, robust, massive rotating structures. The first thing is far easier. They are easier maintainable and replaceble.
Paraterraforming is just other way to keep and regulate atmosphere. There are designs with equal value for Mercury without the necessity of roofing the world. Matter of money and aesthetics.
I don't think you have thought about this well enough, paraterraforming offers a pay as you go abilty.
With the advent of nano-tech, the materials will be available at an even cheaper rate, nano-carbon tubles is one such material.
Paraterraforming also offers earth type atmospheric presures, and a more efficent use of rare gases such as nitrogen.
and in fact the leaf provides inspiration for the perfect way to roof a near sun planet.
just imagine nano-bots growing that roof, getting its resources from a vien like structure.
There were some posts on this on the Terraforming Venus topic.
It's got a magnetic field, metals and Mars-like gravity so those are some pluses. Lots of incoming sunlight too. Not much in the way of atmosphere and just a bit of water that we know of. No fair posting about building rails around the globe and running a city along it in permanent sunset. KSR already took that idea. A sun shade of some kind is probably going to be a must.
Thoughts?
What about paraterraforming as an option?
After reading mbastion's links:
Although it takes a long time to loose the Hydrogen, it takes longer still to loose the CO2 which gets left behind, as in the case of Venus. What gets left behind might be very hard to repair later. Just think of the Moon as a miniature Venus, CO2 atmosphere, H2SO4 clouds.
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The effort and longer term consequences are not worth the short term result.Water is much heavier than pure hydrogen, even vaporized, and it builds clouds in a thick atmosphere.
If Venus was given a "good" atmosphere and enough water it would stabilize and if the water cycle is created it would stay. Same with the Moon. Too much CO2 creates a runaway greenhouse effect. What if there was only 1-10% of it originally and the rest of it nitrogen, oxygen and water?
i have a point about hydrogen, hydrogen usually will combine with other substances before it gets the chance to escape, one of the concerns about the future hydrogren economy is that the extra hydrogen will attack the ozone layer.
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