here here :
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Thirty years ago I read a book, where everything is like in Avatar, only without war and on Jupiter, banal quiet research, a disabled person, living on an artificial satellite, regularly settles in an artificial cocaryamba, which floats around the planet, performs some work.
Eventually, the disabled person gets tired of returning to the degenerated body and he deserts, remaining in the quite comfortable body of the Jupiter monster.
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by Paul Anderson. "Call me Joe" I highly recommend "Patrol of Time" to read.