Quote:
Originally Posted by mugaliens
It's probably a perceptual/conception thing on my part, but my
brain finds it difficult to perceive how black holes, which weigh
much less than the entire universe, can exist, while when you put
all the mass of the universe in a space the size of a marble, it
some[how] fails to collapse into a black hole, and instead, this
quark soup expands.
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Same here. If the gravitation of all the matter in the Universe
is capable of slowing down the expansion, why isn't it capable
of preventing the expansion in the first place? The gravitation
of a far smaller amount of matter causes stars to collapse.
-- Jeff, in Minneapolis
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"I find astronomy very interesting, but I wouldn't if I thought we
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