Suit-less survivable atmosphere - Revision history

Apm: added related section with links

2025-06-08T08:04:10Z

added related section with links

← Older revision		Revision as of 10:04, 8 June 2025
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	Ignoring the challenge of human survivable landing a spaceship <br>		Ignoring the challenge of human survivable landing a spaceship <br>
	onto the 1atm level of a gas giant transitioning into plane flying mode. <br>		onto the 1atm level of a gas giant transitioning into plane flying mode. <br>

			== Related ==

			* [[Colonization of the solar system]]
			* [[Colonization of asteroids]]
			----
			* [[Underground transport and habitation]]

Apm: /* Water worlds */

2025-06-07T22:30:08Z

Water worlds

← Older revision		Revision as of 00:30, 8 June 2025
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	it may nigh instantly freezing any exposed skin. <br>		it may nigh instantly freezing any exposed skin. <br>
	Also the extraterrestrial water might contain a lot of ammonia NH<sub>3</sub> <br>		Also the extraterrestrial water might contain a lot of ammonia NH<sub>3</sub> <br>
	which would be rather unhealthy as for the skin directly and for the body due to diffusion through the skin. <br>		which would be rather unhealthy both …
			* for the skin directly and
			* for the body due to diffusion through the skin. <br>

	== Gas/Ice giants ==		== Gas/Ice giants ==

Apm: /* Water worlds */

2025-06-07T22:29:33Z

Water worlds

← Older revision		Revision as of 00:29, 8 June 2025
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	In water filled underground caverns the water could be considered the atmosphere. <br>		In water filled underground caverns the water could be considered the atmosphere. <br>
	This would pretty much amount to ice-diving. <br>		This would pretty much amount to ice-diving. <br>
	Brine can even be quite few degrees below 0°C ~~<br>~~		Brine can even be quite few degrees below 0°C which might be quite problematic as <br>
	which might be quite problematic nigh instantly freezing any exposed skin. <br>		it may nigh instantly freezing any exposed skin. <br>
	Also the extraterrestrial water might contain a lot of ammonia NH<sub>3</sub> <br>		Also the extraterrestrial water might contain a lot of ammonia NH<sub>3</sub> <br>
	which would be rather unhealthy as for the skin directly and for the body due to diffusion through the skin. <br>		which would be rather unhealthy as for the skin directly and for the body due to diffusion through the skin. <br>

Apm: /* Water worlds */

2025-06-07T22:28:51Z

Water worlds

← Older revision		Revision as of 00:28, 8 June 2025
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	Ceres, Enceladus, Titan, Callisto, Ganymede, (Europa), Triton, …		Ceres, Enceladus, Titan, Callisto, Ganymede, (Europa), Triton, …

	In water filled underground caverns the ~~warter~~ could be considered the atmosphere. <br>		In water filled underground caverns the water could be considered the atmosphere. <br>
	This would pretty much amount to ice-diving. <br>		This would pretty much amount to ice-diving. <br>
	Brine can even be quite few degrees below 0°C <br>		Brine can even be quite few degrees below 0°C <br>

Apm: /* Water worlds */

2025-06-07T22:28:39Z

Water worlds

← Older revision		Revision as of 00:28, 8 June 2025
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	== Water worlds ==		== Water worlds ==

	Ceres, Enceladus, Titan, Callisto, Ganymede, (Europa), Triton		Ceres, Enceladus, Titan, Callisto, Ganymede, (Europa), Triton, …

	In water filled underground caverns the warter could be considered the atmosphere. <br>		In water filled underground caverns the warter could be considered the atmosphere. <br>

Apm: /* Mars */

2025-06-07T22:27:05Z

Mars

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	Without the nitrogen flammability might be a bigger concern. <br>		Without the nitrogen flammability might be a bigger concern. <br>

	One cannot run out fo oxygen as all the stones are made partly from it. <br>		One cannot run out of oxygen as all the stones are made partly from it. <br>
	And strip-off-rates by solar wind can easily be replenished. <br>		And strip-off-rates by solar wind can easily be replenished. <br>
	The issue it getting all the oxygen in the first place. <br>		The issue it getting all the oxygen in the first place. <br>

Apm: /* Mars */

2025-06-07T22:26:52Z

Mars

← Older revision		Revision as of 00:26, 8 June 2025
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	For the human body the pressure of the atmosphere is the same as a vacuum. <br>		For the human body the pressure of the atmosphere is the same as a vacuum. <br>
	So it's not survivable (beyond a few very ~~unplasant~~ seconds as is a true vacuum too).		So it's not survivable (beyond a few very unpleasant seconds as is a true vacuum too).

	Upping pressure to make it survivale would amount to a minimal variant of terraforming. <br>		Upping pressure to make it survivale would amount to a minimal variant of terraforming. <br>
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	One cannot run out fo oxygen as all the stones are made partly from it. <br>		One cannot run out fo oxygen as all the stones are made partly from it. <br>
	And ~~stripp~~ off rates by solar wind can easily be replenished. <br>		And strip-off-rates by solar wind can easily be replenished. <br>
	The issue it getting all the oxygen in the first place. <br>		The issue it getting all the oxygen in the first place. <br>
	A centuries long project even with most advanced technology currently imaginable. <br>		A centuries long project even with most advanced technology currently imaginable. <br>

Apm: basic page

2025-06-07T22:25:57Z

basic page

New page

{{Stub}}

* Pressure suit-less survivable
* Warming suit-less survivable

== Mars ==

For the human body the pressure of the atmosphere is the same as a vacuum. 
So it's not survivable (beyond a few very unplasant seconds as is a true vacuum too).

Upping pressure to make it survivale would amount to a minimal variant of terraforming. 
Splitting rock to up the oxygen pressure to the same partial pressure we have here on Earth. 
Maybe reducing CO2 levels to a bit lower partial pressures (small problem in comparison to upping oxygen). 
Nitrogen reserves ion Mars not very clear as of 2025. 
Without the nitrogen flammability might be a bigger concern. 

One cannot run out fo oxygen as all the stones are made partly from it. 
And stripp off rates by solar wind can easily be replenished. 
The issue it getting all the oxygen in the first place. 
A centuries long project even with most advanced technology currently imaginable. 

== Venus ==

At 50km height pressure and temerature are already survivable without a suit. 
Breating mask needed as 100% CO2 is rather bad to breath in. 
If the concentration of the sulfuric acid in the clouds at that height is low enough 
(it might be as it is very dry there) then bare skin might be tolerable for a while. 

Even just removing the sulfur from the surface would be an enormous project. 
But it might make the skies clear and exposed skin safe. 
Unclear in how far longer term exposure of all of ones skin to 100% CO2 is problematic.

== Titan ==

Very nice nitrogen atmosphere of 1.5atm. But very cold. 
There are cold chambers of -100°C as medical treatment, Titan is quite a bit colder still. 
In fact just barely above the condensation point to liquid nitrogen. 
* Good: Slow wind-speeds may make the situation better
* Bad: The low temperatures lead to a high gas density at 1.5 atm and thus to better heat conductivity.
=> Unclear if and how long exposure of bare skin to titans air is safe. 
It seems there can't be much done. Heating the entire moon by a lot is likely not possible.

== Water worlds ==

Ceres, Enceladus, Titan, Callisto, Ganymede, (Europa), Triton

In water filled underground caverns the warter could be considered the atmosphere. 
This would pretty much amount to ice-diving. 
Brine can even be quite few degrees below 0°C 
which might be quite problematic nigh instantly freezing any exposed skin. 
Also the extraterrestrial water might contain a lot of ammonia NH3 
which would be rather unhealthy as for the skin directly and for the body due to diffusion through the skin. 

== Gas/Ice giants ==

For the ones with nice gravity (all but Jupiter have 1g) 
it may be too cold at depths where the pressure is not yet too high. 
Ignoring the challenge of human survivable landing a spaceship 
onto the 1atm level of a gas giant transitioning into plane flying mode.