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> The universe is inside a black hole. This is trivially true, btw. The Schwarzschild radius of the observable universe is less than the presumed plausible siz
by kobeya 9y ago
> The universe is inside a black hole.
This is trivially true, btw. The Schwarzschild radius of the observable universe is less than the presumed plausible size of the universe as a whole. Or alternatively, a "black hole" is a region of space that nothing can escape, not even light, and ongoing and accelerating spatial inflation causes that to be true on an even smaller scale -- most of the universe is unreachable by light emitted today.
> Dark matter is matter which is outside the black hole, which explains why it has mass but no other observable properties
Except that it interacts as if it was superimposed over objects in this universe, not from outside of it.
- brador 9y agoIf the universe is inside a black hole what's outside the black hole?
- officialjunk 9y agoanother universe. and inside black holes in our universe are different universes. goes both directions, who knows how deep. black holes all the way down and up.
- losteric 9y agoOur part of the universe*... The presumption is that neutron stars are the results of gravity overcoming nuclear forces, and black holes are the results of some other force being overcome, and therefore our visible universe is the inside of a greater collapse... Or the explosive eventual death of a black holes... It's a novel idea, but it's just turtles all the way down
- kobeya 9y agoNo, that's not really what I'm saying. A black hole is a just a region that light can't escape from. It is entirely possible for the inside of the black hole to be composed of normal, everyday matter, non-singularity matter. The Schwartzchild radius scales linearly with mass, an unusual relationship that means that for any density the O(r^3) volume will eventually be overtaken by the O(r) Schwartzchild radius.
- kobeya 9y agoobservable universe. The rest of the universe is outside of it.