101–110 of 179 posts
http://mentallandscape.com/C_CatalogVenus.htm
"Venus Revealed" is a pretty good read:
https://www.amazon.com/Venus-Revealed-Clouds-Mysteriious-Pla...
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Life in temperatures that melts lead? Oh... or do you mean in the atmosphere?
> Life in temperatures that melts lead? Why not? It'd have to have different chemistry, sure, but even on Earth life exists in some pretty extreme temperature and environment ranges.
Life that could operate at 500 C is probably not water based at all, which would be very novel and certainly interesting to science.
I've always wondered why we don't seed it with some biology that can eat the components of the Venusian atmosphere (ie: sulfuric acid, carbon dioxide) to make a more habitable planet over time.
Microbes require water, and there isn't enough for them on/in Venus
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well you said it: we know exactly how to heat up mars (greenhouse gases) but its not so clear how to cool down venus. also mars has water.
Mars' atmosphere is 95.3% carbon dioxide, which means that the problem we have to solve is not "how do we inject craptons of greenhouse gas into the atmosphere" but "how do we stop the solar wind from stripping away the atmosphere," which is not a problem we have a clear idea as to how to solve.
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I think upper atmosphere study would be great. There are some colony designs that suggest an oxygen filled colony would float at earth pressure. And with the sulfuric acid and co2 you have everything you need to make water air and fuel. Not to mention protection from asteroids and deadly rays. It would be a challenge but all of the planets and other bodies present their own challenges.
At the same ambient pressure, an O2 would float, but just barely. It wouldn't float like a hydrogen/helium balloon does on earth. If the pressure is the same on either side of the balloon, lift comes from different atomic weights of the gasses. Helium weights much less than air. But the O2 inside the Venus habitat doesn't weigh all that much less than the CO2 outside. As a practical matter, you would probably need li…
Stay tuned for the Venus mechanical maker challenge: https://www.jpl.nasa.gov/edu/events/2019/3/1/mechanical-make... >With its sulfuric acid clouds, temperatures over 450°C, and 92 times the surface pressure of Earth, Venus is one of the most hostile planetary environments in the solar system. Prior missions have only survived hours! But an automaton (or clockwork mechanical robot) could solve this problem. By utiliz…
From the link: > ... at the Glenn Research Center. > > The team has already tested the circuits in a Venus simulation chamber — a 14-tonne stainless-steel tank that can imitate the temperature, pressure and specific chemistry of the Venusian surface.
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I see no reason why intelligent life with high technology could not have developed on Venus. Say, several hundred million years ago. And perhaps they triggered runaway greenhouse warming, which vaporized the oceans. And so perhaps it was the loss of the oceans that ended plate tectonics, not the other way around. I doubt that runaway greenhouse warming could get so extreme for Earth. I recall reading that solar input…
> I see no reason why intelligent life with high technology could not have developed on Venus. Say, several hundred million years ago. And perhaps they triggered runaway greenhouse warming, which vaporized the oceans. And so perhaps it was the loss of the oceans that ended plate tectonics, not the other way around. The only way that thought experiment could make sense is if they had the technology to do that, but not…
Inverting it, we could probably not detect any artificial satellite on Venus here from Earth. But we've had launched satellites there, that should be able to detect other ones if they have a good camera (because satellites shine).
So, the question becomes, does any of the satellites there has a good enough camera?
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How would we float a platform at that height?
By attaching it to a steel balloon filled with breathing gas, which can provide lift in the Venusian atmosphere. Inside the baloon you get a really nice habitat with the correct Temperature, pressure and gas composition for humans to live in.
With Mars, you can mine building materials from the surface.
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This is a bit more thought out than perhaps OP applied, several theretical investigations have been done into floating cities on venus and it more or less comes down to building blimps out of gasses like nitrogen and oxygen. Because the venus atmosphere is so dense, this would actually work.
I would love to read about those investigations. Do you have any pointers?
Stay tuned for the Venus mechanical maker challenge: https://www.jpl.nasa.gov/edu/events/2019/3/1/mechanical-make... >With its sulfuric acid clouds, temperatures over 450°C, and 92 times the surface pressure of Earth, Venus is one of the most hostile planetary environments in the solar system. Prior missions have only survived hours! But an automaton (or clockwork mechanical robot) could solve this problem. By utiliz…