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Q&A

Gravity and a massive gaseous sphere in space

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Some research, and some answers from others, have suggested that a massive (planet sized?) sphere of gas in space, with no hard core, but breathable air inside some part of it, can create enough of its own gravity to keep it stable (hopefully long enough for life to form there).

The massive sphere of gas would exert its own gravity thus keeping the gasses contained, even without a "cap". Inside the sphere one would be pulled toward the center, but once at the center one would experience a sense of no gravity since the gravity would be pulling on you from all directions. That is if the center doesn't have massive pressure. Or would it?

Also, if the sphere were close to a sun the gasses would remain gaseous, be warm enough to sustain life, and have light. There might be water there too.

I'm desperately trying to create a zero-g world/environment, that has native animal life in it, that humans can visit and live in. Is any of this possible?

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This post was sourced from https://worldbuilding.stackexchange.com/q/102599. It is licensed under CC BY-SA 3.0.

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