The gravitational-collapse tag has no wiki summary.
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Questions about the Jeans length
I have a couple of questions about the Jeans length. Suppose the universe has a homogeneous energy density, except there's a spherical region that is overdense.
I understand that if the region is ...
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Gravitational time delay and contraction of matter
How can any matter contract to its Schwarzschild radius if gravitational time dilation clearly states that all clocks stop at that point. So any contraction any movement would stop. If that is so why ...
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So gravity turns things round
It makes sense, since gravity tends to push the surface of a body towards it's center. Unless I'm mistaken, everything with mass has it's own gravity, every atom and for instance, our own bodies ...
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What happens to atoms inside the black hole?
Black holes have very high gravitational force intending to crush everything. So as we know atoms in a molecule have inter atomic spacing between then and further electron,s also revolve at a certain ...
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Why doesn't Brooklyn expand? (Or “Is the expansion of the universe kinematic?”) [duplicate]
Possible Duplicate:
Why space expansion affects matter?
Imagine two tiny spacecrafts that are moving with the Hubble flow and so are moving away from each other. Let's assume that they've ...
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3answers
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Why the distribution of elements on earth?
I've been wondering exactly why the elements are distributed the way they are on earth. The heavier elements have their origins in the centers of stars, or in supernova. After the death of the stars, ...
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White Holes and Time-Reversed Oppenheimer-Snyder collapse
So, the canned explanation that I always hear about why the white hole solution of the extended Schwarzschild solution is non-physical is that "The matter distribution cuts off the white hole ...
