Timeline for Settings formed by Uncontrolled Terraforming of Venus and Mars via Portals
Current License: CC BY-SA 3.0
19 events
| when toggle format | what | by | license | comment | |
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| Jun 30, 2017 at 15:40 | comment | added | Henning M. | At least mars would be venusformed, not terraformed, which might be worse than no athmosphere for real terraforming. The Mars portal would be areostationary I think. Venus seems to be more difficult because it rotates so slow to have a usable aphrodio- or cytheriostationary orbit, which would be too far away anyway. Just make it stationary. | |
| Mar 28, 2015 at 15:48 | history | edited | Vincent |
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| S Dec 7, 2014 at 20:05 | history | suggested | jasonleonhard | CC BY-SA 3.0 |
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| Dec 7, 2014 at 19:03 | review | Suggested edits | |||
| S Dec 7, 2014 at 20:05 | |||||
| Nov 16, 2014 at 2:55 | history | edited | Vincent | CC BY-SA 3.0 |
Capitalization
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| Oct 13, 2014 at 3:21 | answer | added | Demi | timeline score: 4 | |
| Sep 26, 2014 at 17:28 | vote | accept | kaine | ||
| Sep 18, 2014 at 21:27 | answer | added | PipperChip | timeline score: 16 | |
| Sep 18, 2014 at 15:13 | comment | added | kaine | The atmosphere of Venus is 21000 times more massive than that of Mars. The gravity well is exactly the kind of thing I don't know how to consider. Earth s atmosphere is only 225 times more massive than mars. | |
| Sep 18, 2014 at 15:11 | comment | added | Tim B | Additionally you need to think about the difference in gravity. The portal in Venus would be much deeper in the gravity well if it was at surface level. The required injection of potential energy to cross the portal would counter-act a lot of the pressure. | |
| Sep 18, 2014 at 15:08 | comment | added | kaine | I suppose if you like we could say the portal were larger as I overestimated in my mind the effect on venus. | |
| Sep 18, 2014 at 15:02 | comment | added | kaine | Mars has a atmosphere weight of 25 tetatonnes which is far less than earth but still alot. I knew that. This isnlt meant to be, transfer it all, kind of scales but that would be interesting too. it would take 536000 years to double the atmosphere of mars via this. | |
| Sep 18, 2014 at 14:57 | comment | added | Tim B | Actually I just looked it up. I know Earth isn't Venus but the figures were handy. Earth's atmosphere is around 5.1480×10^18 tonnes, so at 1.5 tons per second it would take 108,828,006,088 years to transfer (that's not allowing for the reduced pressure differential either as the pressures equalized on both sides of the portal). | |
| Sep 18, 2014 at 14:54 | comment | added | Tim B | Interesting idea. 1.5 tons per second sounds a lot on a human scale, it's not much on a planetary scale though. How does it compare to the total mass of a planets atmosphere? | |
| Sep 18, 2014 at 14:19 | history | edited | Liath |
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| S Sep 18, 2014 at 13:18 | history | suggested | bowlturner |
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| Sep 18, 2014 at 13:17 | review | Suggested edits | |||
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| Sep 18, 2014 at 12:49 | review | First posts | |||
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| Sep 18, 2014 at 12:47 | history | asked | kaine | CC BY-SA 3.0 |