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pillow basalt enjoyer @tallestgoose2/18/2024, 4:00 AM

American Ronin @jinglebellrockstar

American Ronin @jinglebellrockstar2/18/2024, 1:32 AM

science side of cohost: if that theory about a nuclear chain reaction that would ignite the entire worlds atmosphere were true, what would happen? would it like grow back someday if so?

#izzy.txt #The Cohost Global Feed #science

pillow basalt enjoyer @tallestgoose2/18/2024, 4:00 AM

I'm only an undergrad in geology, so take this with a grain of salt, but from what I understand, it could maybeeee grow back. The Earth would have to be pounded into a literally infernal hellscape from which we could get atmosphere gases from volcanic eruptions and such. We also don't know how the atmosphere got oxygenated and I doubt the new atmosphere would be thick enough to sustain life again. No clue how the the atmosphere would catch fire and burn away, but I'm not a nuclear physicist.
This seems like a decent read on atmospheric formation, from what I've skimmed:
https://cshperspectives.cshlp.org/content/2/10/a004895.short

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in reply to @jinglebellrockstar's post:

Lexie_Plays_Fast @Lexie-Plays-Fast2/18/2024, 11:56 AM

Answering a question that starts with "If this thing that's not true was true, what would happen?" is always going to be tricky, since definitionally we're operating in an alternate universe with different laws of physics.

However, absent an atmosphere the Earth would probably end up growing a new one. There is a lot of gas in the ocean, and even in rocks and dirt. If the Earth's atmosphere was completely stripped away by a single, instantaneous event, the surface would outgas enormous amounts of dissolved and trapped gasses, building a new atmosphere.

The composition of the new atmosphere would probably skew way more heavily towards CO2 than O2, but in time a similar oxygenation process as happened once before might well happen again, and life would go on, a ~billion years down the road.