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MarsDog

Member

From: vancouver canada

Registered: 2004-03-24

Posts: 852

Re: Cooling Venus - Mission Possible ?

Astrobiology.net  - Giving Mars Back its Heartbeat thread
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Interesting is that, even on Earth, you have to bury the carbon in order to have free oxygen. Estimated 40,000 years to produce oxygen on Mars.
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Similarly on Venus, easier to make planet for plants, takes a lot longer to make breathable for animals.
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Garbage mountain, Venus style, would be of dead plants subducted.

karov

Member

From: Bulgaria

Registered: 2004-06-03

Posts: 953

Re: Cooling Venus - Mission Possible ?

I can`t understand why always a Hlorophile photosinthesys is ment when production of O2 in atmosphere is conserned. Indeed the natural photosinthesys has efficiency LESS than 1% from the captured energy. The existing on the market solarpower pannels 20-30%. Indeed much shorter periods have to be had in mind for making the atmospheres earth-like. If we innitially use rude industrial methods for mass processing of the local resourses in breathable air, than after the introduced biosphere would only sustain it in this state (at least partially), but involvment of industial (sometimes masked as "natural" or just hidden from the inhaboitants sight) methos will contineau, till humans live there. The irony is that this is unavoidable here on Earth, too. Earth is "terraformed" soon. In the major part of the geological ages it was barelly livable by humans (not to speak about human civilization). An comperativelly soon the natural processes will make it non- livable again and for long. If we don`t tickle the environment with every method we have and we`ll have, it will kill us and the other contemporary species of ours -- AS USUAL!!!

Repairing and maintainance of the Earth environment doesn`t differs at all to the producing brand new ones from scratch on other planets or in rotating tubes or onto artificial supramundane shells. It just occured that here we have ready to spoil itself biosphere and we must maintain it... On mars, Venus and other places we must reproduce the earrth-like environment and AGAIN strictly to keep it such way.

THe "geological terrafoirming" is impossible. Every environment should be repaired.

Example -- the Earth!!!

Gregori

Member

From: Baile Atha Cliath, Eireann

Registered: 2008-01-13

Posts: 297

Re: Cooling Venus - Mission Possible ?

To cool Venus, a thin sun shield could be constructed out of a lattice of welded steel plates derived from an Iron rich Asteroid(s) and place in some stable orbit or another, probably further away from the planet. Preference will be for a modular and simple design, requiring very little imports from Earth after other than construction machinery.

The abundant solar power near Venus could power the machinery. If not that, perhaps a fusion reactor would work better.

To spin the planet faster, you need a really long lever