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by VladRussian2
4523 days ago
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>Escape to where? You can't escape from the universe as a whole. The concept of "escape speed" has no meaning for the universe as a whole. take a 1B light years radius ball, populate it with density of our Milky Way - that ball will have 1B Schwarzschild radius. Calculation of gravitational potential (escape speed) from it to the rest of the Universe makes sense, doesn't it?. And due to this gravitational potential it will be bona fide black hole from the point of view of the rest of the Universe. |
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Yes, but that's not the same as escaping from the universe as a whole.
And due to this gravitational potential it will be bona fide black hole from the point of view of the rest of the Universe.
So what? What does that have to do with assigning a gravitational potential to the universe as a whole?