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Speedademon
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Planets with potentially breathable atmospheres

03 May 2017 01:30

scr00180.jpg

I got really close. But too much CO2
But the fact that some geniuses were laughed at does not imply that all who are laughed at are geniuses. They laughed at Columbus, they laughed at Fulton, they laughed at the Wright Brothers. But they also laughed at Bozo the Clown.
Carl Sagan
 
akorn
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Planets with potentially breathable atmospheres

03 May 2017 12:56

Speedademon wrote:
I got really close. But too much CO2

Best find I ever saw! Very nice!
CO2 level is not a problem at all. Oxygen is a little too low though, but with training it might be possible to adapt. Temperature is high, but that's the average temperature. At the Ttidally locked planet, you could easily imagine cooler air closer to the back side. The big problem here is SO2. Allthough having a pretty low partial pressure SO2 level could be very unhealthy.
 
A-L-E-X
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Planets with potentially breathable atmospheres

07 May 2017 16:50

Watsisname wrote:
That's a good point -- we did rather assume to take this to be breathable for humans.  But if we generalize it to be breathable for any lifeform then it's very difficult to know what the limitations are, or what to search for.

At various times in the history of Earth, its atmospheric composition was very different than it is now.  So it is important to remember that not only might be better for other forms of life, but with time, it might evolve to become better for us too.
Last edited by A-L-E-X on 07 May 2017 16:51, edited 1 time in total.
 
A-L-E-X
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Planets with potentially breathable atmospheres

07 May 2017 16:51

Speedademon wrote:
scr00180.jpg
I got really close. But too much CO2

Wow, are you using default graphics settings?
 
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Ragni
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Planets with potentially breathable atmospheres

10 May 2017 18:31

scr00180.jpg
This planet has to much CO2 but could be breathable if the CO2 was replaced with nitrogen. You could survive on it if you used a mask or suit of some sort (reminds me of the planet from Avatar).
Ayy Lmao
 
ImperiumAssertor
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Planets with potentially breathable atmospheres

06 Jun 2017 08:45

The search continues.
Here is my dossier of potentially breathable exoterras.
Of about 2 dozen otherwise habitable planets except for levels of CO2 which are too high, I've found about 5 planets in the Milky Way which are (probably, correct me if I'm wrong) habitable.

If I understand correctly as well, some of these terras would have the effect of heightening mental functioning through higher levels of oxygen  :)
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A thin atmosphere and a long day on this one.

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This one has a pretty thin atmo as well, though its appearance is exotic. Is this the "Barbie World" they talk about?

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This one is, afaik, habitable if not a little cold. But put a coat on and you'll be fine.

scr01241.jpg

And though this ones rotation is very slow, if you could work out a way to get around that you'd be living on a pretty beautiful planet. I love those 'whispy' landmasses and the comfortable and height-conducive 0.6g environment.

Oh - the pictures attached in a weird way. Whatever, too tired to sort it out lol. The pics at the bottom are in the right order.
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Roquwat
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Planets with potentially breathable atmospheres

11 Jun 2017 09:56

Nice planets, but they have too much SO2 and CO2 so you could not survive for a long time on them
 
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Watsisname
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Planets with potentially breathable atmospheres

11 Jun 2017 15:07

Yeah, either gas at those concentrations leads to a very unpleasant death within minutes.  The CO2 must be below 0.03 atm (the second column in the atmo tab), and the SO2 must be less than 10-4 just to survive for an hour, and preferably less than 10-5 (this is really hard to find in current version of SE).

The third planet also has too much oxygen.  Even without the CO2 and SO2, you would die of hyperoxia within a few hours.  The oxygen should be between 0.1 and 0.6 atm.
 
elemental
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Planets with potentially breathable atmospheres

17 Jun 2017 03:30

I'm new to this forum and I've been working hard to search too, but since I have not much knowledge on astronomy, I need some help from the pros and experts here. Thx very much. 
Here is a close one:
RS 8474-1353-8-10941311-1310 A4
One question: What is the minimum atm of O2 ? And how about the maximum level of CH4?
Attachments
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ImperiumAssertor
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Planets with potentially breathable atmospheres

19 Jun 2017 04:55

That is a shame!

Watsisname wrote:
Source of the post Yeah, either gas at those concentrations leads to a very unpleasant death within minutes.

I was working under the (I guess false) impression that since we breathe oxygen, it can only be a good thing even in high concentrations. Well so much for that. Us damned unflexible humans...

I am pleased to say that I've pretty much found what seems to be Earth 2.0... Though unfortunately, the COlevels are 2 times too damn high. But pretty close to breathable levels! So perhaps lightweight masks or some kind of implant filtering COcould make living on the planet viable. And perhaps gene editing of some kind for long-term inhabitants. Observe, Earth 2.0, sitting 67.29 kly away:

scr00433.jpg

The day length, beautiful colours, epic mountains, broad rivers and seas, and near-Earth atmosphere almost make me think it's not precedural, but some kind of easter egg lol. On top of all that, it's toasty warm with some great beaches and perfect azure waters. And before you go thinking about settling it, as you can see - Palpatine already has dibs  ;)

scr00421.jpg


edit: so after reading your post again, I see 10e-4 atm of SO2 is only survivable for an hour... Only suggestion for that one would be that visitors to and residents of this planet are given altimeters and always stay above an altitude at which the overall pressure is sufficiently low such that the SO2 is at safer levels. That, or an implant/gene edit/masks.
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Last edited by ImperiumAssertor on 19 Jun 2017 06:57, edited 2 times in total.
 
ImperiumAssertor
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Planets with potentially breathable atmospheres

19 Jun 2017 05:07

Everest? 

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Never heard of her.

elemental wrote:
Source of the post One question: What is the minimum atm of O2 ? And how about the maximum level of CH4?

Watsisname mentioned above - 0.1 to 0.6 atm :)

What about N2? Is there a min/max concentration or is it not necessary? Out of 100 earth-esque terras I find, 90 will have CO2 as the primary gas, 9 will have O2as primary, and 1 will have N2 as primary and O2 as secondary. And 1 in 2 of the latter are tidally locked haha smh. The search for Earth-like terras is extremely challenging, which is a little off-putting. Is this realistic?
 
ImperiumAssertor
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Planets with potentially breathable atmospheres

19 Jun 2017 06:21

Ok, sorry for multipost, but based on the info about atmospheric pressures, I may have just found a very nice planet. It's not as "Earth Similar" as Terra 2 above, but it's got some of the best views in the Galaxy.

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Note good O2 (nearly 0.2), safe CO2, and more than safe SO2. My only concern is overall pressure. Would this make it hard to breathe or something? And again the question of N2may bring up issues.
 
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Watsisname
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Planets with potentially breathable atmospheres

20 Jun 2017 05:02

ImperiumAssertor, OMG that "Earth 2.0" is awesome.  I've just spent a lot of time exploring around it.  Very nice find! :)  Yeah, the CO2 and especially SO2 are too high, but the planet has so many nice and Earth-like attributes besides.  And we can imagine using simple filters for the toxic stuff.

ImperiumAssertor wrote:
Source of the post What about N2? Is there a min/max concentration or is it not necessary?

I'm not entirely certain, but I think because it is inert it doesn't matter, provided that the total pressure is survivable and the partial pressures of the gases we need, or are toxic, are in the respective ranges.

Gnargenox showed earlier that at low pressures (but above the Armstrong limit), the evaporation of water from the lungs causes a problem by displacing the other gases and effectively reducing the oxygen concentration.  There are a lot of other complicated factors and so it can be hard to figure out the breathability precisely.
 
elemental
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Planets with potentially breathable atmospheres

24 Jun 2017 04:28

Hello again.
Another close one: RSC 1228-2-4-1516-9 3. Tidally locked though.
Wondering whether we can reduce CO2 using photosynthesis...
Attachments
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Gnargenox
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Planets with potentially breathable atmospheres

24 Jun 2017 12:30

Looks nice elemental, its hard to see all the numbers on your screenshot, but then again, I missed my eye doctor's appointment.

I double-dog dare anyone to spend an hour prancercizing on this planet!
RS 5510-3632-6-214843-73
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