Go home Stellar Forge, you're drunk

Heavy Johnson

Heavy Johnson
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"Ammonia and Oxygen"
 

Major Klutz

Major Klutz
No. Just kidding.

I suppose that since there is life on this planet, that life is responsible for the oxygen.
The same way all of the oxygen on Earth would eventually be bound up with carbon if not for those pesky plants that keep separating them.

I wonder if free oxygen could exist in an ammonia atmosphere for long. I'm no chemist, but maybe at 193K it's cold enough to not react.
 
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marx

marx
Yeah, the Forge does this with other atmosphere types from time to time too. If it just has a tiny bit of oxygen, not even enough to be displayed on the system map, then bam, the type is now ammonia and oxygen. Perhaps it's about the clouds? No idea if yours even had any.
 

Sapyx

Sapyx
I think all ammonia worlds have "ammonia and oxygen" atmospheres, whatever the stellar forge calculates the composition at. Which I think is technically correct, though not particularly useful scientifically; oxygen because of the lifeforms, ammonia because of evaporation from the ammonia oceans. Earth could on that basis be considered to have a "water and oxygen" atmosphere, though the water content at any given spot depends on the local weather conditions, varying between 5.0% and 0.0005%.
 

Shadowdancer

Shadowdancer
I'm always wary of planets with several hundred atmospheres surface pressure at low-ish tempreatures. It always boils down (sorry) to a supercritical something, and however the majority of it would even stay near the planet at such low gravity seems weird.
 

Heavy Johnson

Heavy Johnson
Shadowdancer said:
I'm always wary of planets with several hundred atmospheres surface pressure at low-ish tempreatures. It always boils down (sorry) to a supercritical something, and however the majority of it would even stay near the planet at such low gravity seems weird.
Click to expand...

You've got a good point there. Our atmosphere at STP is 273.15K, and it's mostly nitrogen-oxygen. You would think that a mostly nitrogen atmosphere at 916 atm would be *much* hotter....
 

Shadowdancer

Shadowdancer
Heavy Johnson said:
You would think that a mostly nitrogen atmosphere at 916 atm would be *much* hotter....
Click to expand...
I have straight out no clue how that would behave. At least from what little I found it should be a supercritical fluid, but mixing in argon appears to have quite the effect, so all bets are even more off. And then there's water geysers spraying into that mess, which should result in quite familiar water ice, unless it just goes into solution and floats away into the atmosphere.

One of the funnier outcomes would be a layer of crushed ice on the bottom of a planet-spanning atmospheric nitrogen sea.
 
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