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>For all we know, we live inside a black hole, as far as we understand the matter in the universe and it's size. The size of the observable universe line up wit
by brokenmachine 7y ago
>For all we know, we live inside a black hole, as far as we understand the matter in the universe and it's size. The size of the observable universe line up with the event horizon of a black hole with the same mass. It may be a coincident.
Is that true? I thought the whole reason they came up with dark matter was that the universe was expanding faster than the amount of detectable matter inside it would suggest.
- antepodius 7y agoThat's dark energy. Dark matter would slow down the expansions of the universe, and they came up with that to explain the rotation curves of galaxies: they're flat- all the stars in e.g. the Milky way go around the center in the same amount of time- but that shouldn't be the case going by just the matter we can see. Ergo, dark matter.