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Post by tukuro on Nov 30, 2016 16:25:19 GMT
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Post by tukuro on Nov 30, 2016 19:08:35 GMT
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Post by n2maniac on Dec 1, 2016 6:30:42 GMT
Children of an Undead Earth?
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Post by tukuro on Dec 1, 2016 13:02:34 GMT
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Post by tukuro on Dec 1, 2016 17:56:30 GMT
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Post by lieste on Dec 1, 2016 20:45:25 GMT
Mars might be doable, but Luna isn't feasible. There is no magnetosphere so no protection for any added atmosphere, and this is and the low gravity is why there is no atmosphere to speak of there. (Only miniscule outgassing from the lithosphere, reabsorbed by re-freezing 'over night' if not lost to the solar wind.
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Post by Pttg on Dec 1, 2016 23:27:02 GMT
I remember reading a book a while back where a lunar terraforming project just kept throwing in fresh volatiles every couple centuries. Sure it wasn't stable, but neither is Florida.
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erik
New Member
Posts: 34
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Post by erik on Dec 2, 2016 5:36:53 GMT
Ganymede does have a magnetic field so I think its likely the 2nd most viable target for terraforming efforts after Mars, despite having slightly lower surface gravity than Moon.
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Post by n2maniac on Dec 2, 2016 7:08:29 GMT
Mars might be doable, but Luna isn't feasible. There is no magnetosphere so no protection for any added atmosphere, and this is and the low gravity is why there is no atmosphere to speak of there. (Only miniscule outgassing from the lithosphere, reabsorbed by re-freezing 'over night' if not lost to the solar wind. Lets see, escape velocity of... 2.4km/s at the surface. Yea, the atmosphere is going to leave at a nontrivial rate. Get to ~1500K in the exosphere and nitrogen's average molecular velocity will hit escape velocity. Anyone have a good idea of how quick that process is, given it is probably vacuum UV solar driven?
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Post by tukuro on Dec 2, 2016 17:26:08 GMT
Mars might be doable, but Luna isn't feasible. There is no magnetosphere so no protection for any added atmosphere, and this is and the low gravity is why there is no atmosphere to speak of there. (Only miniscule outgassing from the lithosphere, reabsorbed by re-freezing 'over night' if not lost to the solar wind. What about speeding up it's rotation? The moon has a (partially) liquid iron core, which means it would increase the strength of the magnetic field. And it's already been calculated that it's feasible to do for a planet the size of Venus. Another benefit of breaking the tidal lock is that shortens the days to the point where you wouldn't need to worry about the atmosphere freezing. Also: New update! Venus: I feel like this is the best one yet. Sadly Venus takes forever to rotate which means you'll probably only see one side during a skirmish. You can of course fix this by editing celestialbodies.txt and changing SiderealRotationPeriod_s to something like-80000. Link:s14.postimg.org/9h34mrnhb/venus.jpgs14.postimg.org/nostbf067/venus_specular.jpg
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Post by newageofpower on Dec 4, 2016 2:30:12 GMT
Venus is potentially terraformable. Luna, definitely not.
Even Mars is iffy. It's weak gravity means the atmosphere simply cannot be at a density which unmodified humans can breath, long term.
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Post by The Astronomer on Dec 5, 2016 6:41:14 GMT
I think I will need a version without clouds, so I can replace those happy blue ocean with realistic ocean color. I think I will also need normal Earth (with normal ice caps and normal sea level).
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