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Old January 28th, 2004, 05:35 AM

Phoenix-D Phoenix-D is offline
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Default Re: Why is Space a Vacuum

Space is a vaccum because there is little to nothing -there-. Vaccum is just lack of pressure. Nothing there, nothing to exert pressure..

Given enough time and nothing external to stop it, gas will expand to fill any available space. In the case of your oxygen bottle, that amounts to the entire UNIVERSE. So the pressure is very low even when there is something there.
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