I’ve been reading that Venus’ atmospheric pressure is something like 90x Earth’s…but since Venus’ gravity is almost identical to ours and with no magnetic field to keep the solar wind from stripping the atmosphere from the planet, what makes and keeps it so thick? How does it not just evaporate or blow off into space (if being continuously fed by volcanoes) to make it closer to Earth’s density under Earth-like gravity?
**Edit:** Thanks to all of you who took the time to answer here; I think I finally understand what’s at play and how it works. Made my night, and you’re all awesome, hey? 🙂
In: 11
You dont have to go very far underwater on Earth to get 90x the normal surface pressure at sea level.
Venus atmosphere is too hot for water to condense out and it contains lots of CO2 so it’s more like a boiling thin soup than an atmosphere.
Thin soup is still pretty thick compared to regular Earth air, so it doesn’t have to be super deep or super heavy to add up to 90x normal earth air pressure.
I’ve been reading that Venus’ atmospheric pressure is something like 90x Earth’s…but since Venus’ gravity is almost identical to ours and with no magnetic field to keep the solar wind from stripping the atmosphere from the planet, what makes and keeps it so thick? How does it not just evaporate or blow off into space (if being continuously fed by volcanoes) to make it closer to Earth’s density under Earth-like gravity?
**Edit:** Thanks to all of you who took the time to answer here; I think I finally understand what’s at play and how it works. Made my night, and you’re all awesome, hey? 🙂
In: 11
You dont have to go very far underwater on Earth to get 90x the normal surface pressure at sea level.
Venus atmosphere is too hot for water to condense out and it contains lots of CO2 so it’s more like a boiling thin soup than an atmosphere.
Thin soup is still pretty thick compared to regular Earth air, so it doesn’t have to be super deep or super heavy to add up to 90x normal earth air pressure.
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