I had an idea of a character in my story living on the bottom of the upper atmosphere in some sort of space station or ship. Would living like this in a gas giant be possible like on Bespin from Star Wars
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2$\begingroup$ Welcome to worldbuilding. We have a one question per post policy, since it makes easier to pick good answers. Please edit the post accordingly. You can find more info in the help center $\endgroup$– L.Dutch ♦Jun 26, 2021 at 4:25
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$\begingroup$ You might find The Algeraist , by Iain M. Banks of interest. $\endgroup$– user81881Jun 26, 2021 at 16:23
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$\begingroup$ One thing to consider: I think there is a non-zero chance that a terrestrial human may be driven insane by the view. No, I'm not kidding: see Thalassophobia and Acrophobia. But imagine that instead of a big opaque ocean, it's an almost unimaginably colossal, ever-changing, mostly-transparent pocket of unsurvivable atmosphere... which rests on top of an exotic "ocean." $\endgroup$– TomJun 26, 2021 at 17:24
2 Answers
Khaoskaphe
from Jupiter Submarine. https://what-if.xkcd.com/138/
Your character inhabits a khaoskaphe - a vehicle capable of traversing the various layers of the gas giant atmosphere. You can keep Lobot from Bespin since he seems like a handy person to have around but the ability to visit various layers each with their own inhabitants and ecosystem will make it more fun for the fiction.
Yes, a balloon is perfectly possible, though you are somewhat limited in the choice of buoyant gas, realistically only heated hydrogen.
Less realistic, but cooler is a supramundane shell over the planet.