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Thread: Terraforming Venus

  1. #1 Terraforming Venus 
    Administrator KALSTER's Avatar
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    Maybe a stupid idea, but what would happen if you ground up enough iron-nickel asteroids and sprinkled it all over the clouds of Venus?


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  3. #2  
    The Doctor Quantime's Avatar
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    We'd have some pretty snow flakes . I honestly don't know what was your theory would happen?


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  4. #3  
    Administrator KALSTER's Avatar
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    Salt Desserts. And no sulphuric acid clouds anymore. Then maybe less atmospheric pressure, ????
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  5. #4  
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    Quote Originally Posted by KALSTER
    Salt Desserts. And no sulphuric acid clouds anymore. Then maybe less atmospheric pressure, ????
    That would be beneficial for early life, theres got to be some way to terraform, it's good that we are thinking how it would work instead of saying why it wouldn't work.
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    Administrator KALSTER's Avatar
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    Let's just wait for someone with some knowledge to come kill this idea. I'm not even sure iron-nickel alloys can react with H2SO4. It might take the planet a long time to cool off though, if we were able to remove the greenhouse agents :?
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  7. #6  
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    Quote Originally Posted by KALSTER
    Let's just wait for someone with some knowledge to come kill this idea. I'm not even sure iron-nickel alloys can react with H2SO4. It might take the planet a long time to cool off though, if we were able to remove the greenhouse agents :?
    Punch a huge hole in the atmoshpere and let it vent out to space and then cram it full again with Nitrogen and Oxygen
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    I am not the person to kill-off this idea but i would have thought that through the planet's volcanic activity, any changes we make to it's atmosphere would be quickly corrected.
    Eat Dolphin, save the Tuna!!!!
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    WYSIWYG Moderator marnixR's Avatar
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    in the case of venus, the 2 main issues are (1) to get rid of the excess heat, lots of it; and (2) get rid of 90%+ of the atmosphere (think of all the carbonate rocks on earth)

    imo a very tall order, and not one we're ready for at this stage, if ever
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  10. #9  
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    One nice idea I've heard is the possibility of colonizing it with flying zeppelins. The colonists still couldn't survive at the surface, but maybe the could bring raw materials up to their flying fortresses.

    Apparently one advantage of Venus's really thick atmosphere is that oxygen, CO2 and etc act as a lifting gases.
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  11. #10  
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    Thats quite a cool idea.
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  12. #11  
    Administrator KALSTER's Avatar
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    So in relation to my original queation, would we be able to get rid of the acid clouds and would getting rid of them take care of some atmospheric pressure? What is the main greenhouse gas on Venus?
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    WYSIWYG Moderator marnixR's Avatar
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    CO2, about 90 atmospheric pressure of it
    so in short, if you manage to get rid of CO2 you've solved most of the problem

    if you can somehow manage to get a few ocean's worth of liquid water on Venus, that might be able to dissolve the CO2 + precipitate it ...
    still a problem to keep the water liquid though, being closer to the sun
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    I've heard a lot of ideas on removing the CO2 from the atmosphere of Venus. One idea includes the use of a shade that blocks out the sunlight to Venus. Eventually the planet cools and the CO2 freezes and piles up on the surface as snow (I wonder how many km deep it would be) and then we would have a planet that has a nitrogen atmosphere of about 3 or 4 bars. Then we would have to find an efficient way of getting all that frozen CO2 off the planet before we can let the sun hit it again.
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    The colonization of Venus, Earth's nearest planetary neighbour, has been a subject of much speculation and many works of science fiction since before and after the dawn of spaceflight. With the discovery of Venus' hostile surface environment, attention has largely shifted towards the colonization of the Moon and the colonization of Mars.
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    The colonization of Venus, Earth's nearest planetary neighbor, has been a subject of much speculation and many works of science fiction since before and after the dawn of spaceflight. With the discovery of Venus' hostile surface environment, attention has largely shifted towards the colonization of the Moon and the colonization of Mars.
    Yes, such a shame. If only we could find a way to get some water onto Venus. The other obstacles are possible to get around, but water is the major killer of "The Idea".
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  17. #16  
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    For any terraforming project I always like the idea of crashing comets into the appropriate planet. It's dynamic, it's exciting, it's glamarous. 8)
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  18. #17  
    WYSIWYG Moderator marnixR's Avatar
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    and it makes for good pictures - remember the one that peppered holes in jupiter's atmosphere ?
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  19. #18  
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    Quote Originally Posted by marnixR
    and it makes for good pictures - remember the one that peppered holes in jupiter's atmosphere ?
    If only we'd sent a spaceship full of seeds maybe we could have terraformed the jovial giant
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  20. #19  
    WYSIWYG Moderator marnixR's Avatar
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    will sunflower seeds do ?
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  21. #20  
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    Quote Originally Posted by Ophiolite
    For any terraforming project I always like the idea of crashing comets into the appropriate planet. It's dynamic, it's exciting, it's glamarous. 8)
    Of course when you consider all the heat that gets released by the impact, it might be better to try it on Mars instead.
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  22. #21  
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    Quote Originally Posted by kojax
    Quote Originally Posted by Ophiolite
    For any terraforming project I always like the idea of crashing comets into the appropriate planet. It's dynamic, it's exciting, it's glamarous. 8)
    Of course when you consider all the heat that gets released by the impact, it might be better to try it on Mars instead.
    My preferred approach is to use it on the moon with hundreds of comets. These would be directed in a consistent manner so that the moon was spun up to a more reasonable rotation rate and a day more akin to what we are used to.
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  23. #22  
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    Except that carries with it the danger that we could screw something up. The Earth depends on the Moon in order to maintain its axis of rotation. Do anything that might shift the Moon's orbit around, and we could get massive climate change on Earth.
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  24. #23  
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    I would not look to change its orbital distance - merely spin it up by carefully placed directional strikes. An impact tending to change the moons orbit in one direction wold be balanced by a counterstrike. The only thing that would change is that the rotation of the moon about its axis would increase.
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  25. #24  
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    Well, I have to admit that the current 28 Earth day rotation is a bit severe. Still, I'd worry about gyroscopic effects and such impacting the orbit. We'd just want to make sure someone had, very carefully, reviewed all the implications first, and knowing NASA..... they probably would.
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  26. #25  
    Administrator KALSTER's Avatar
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    Is it possible that the moon has an offset centre of gravity? If so, it would not be a good idea to get it spinning.
    Disclaimer: I do not declare myself to be an expert on ANY subject. If I state something as fact that is obviously wrong, please don't hesitate to correct me. I welcome such corrections in an attempt to be as truthful and accurate as possible.

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  27. #26  
    Universal Mind John Galt's Avatar
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    Quote Originally Posted by KALSTER
    Is it possible that the moon has an offset centre of gravity? If so, it would not be a good idea to get it spinning.
    If you mean the centre of gravity is offset from the geometric centre, I think it probably is. There are a mumber of mascons (mass concentrations) beneath the major lunar mare. These are related to large impacts in the heavy impact period 3.9 billion years ago.

    I am not sure why you are worried about the off-centre character. Could you expand?
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  28. #27  
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    Quote Originally Posted by kojax
    Do anything that might shift the Moon's orbit around, and we could get massive climate change on Earth.

    I smell a bad disaster movie.
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  29. #28  
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    I was thinking that if the centre of gravity is offset from the geometric centre, then it might cause some undesirable fluctuations in the strength of the moons gravitational effect on the tectonic plates? Also, would the moon then spin around it's gravitational centre in stead of the geometric centre, like the sun? It might then make the effect worse. I wonder how big the deviation would be. Also as far as the oceans are concerned, won't there be problems when the time between high and low tide becomes smaller? Maybe a chance of causing ripples as the moon moves over the oceans effectively tugging and releasing, tugging and releasing as it goes. This all depends of course on how big the offset is and how fast the rotational period would be.
    Disclaimer: I do not declare myself to be an expert on ANY subject. If I state something as fact that is obviously wrong, please don't hesitate to correct me. I welcome such corrections in an attempt to be as truthful and accurate as possible.

    "Gullibility kills" - Carl Sagan
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    "It is the mark of an educated mind to be able to entertain a thought without accepting it." - Aristotle
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  30. #29  
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    The goal should be to just not change anything then. The Moon is so integrated into our world's eco-systems that you could end up sending a lot of life forms into extinction, not to mention messing up a few farming communities.


    Quote Originally Posted by marnixR
    CO2, about 90 atmospheric pressure of it
    so in short, if you manage to get rid of CO2 you've solved most of the problem

    if you can somehow manage to get a few ocean's worth of liquid water on Venus, that might be able to dissolve the CO2 + precipitate it ...
    still a problem to keep the water liquid though, being closer to the sun
    I just realized that, whatever would get rid of the CO2 on Venus would probably work to get rid of the excess CO2 on Earth. (Unless it would, like, poison the atmosphere in the process. In that case nevermind.)
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