|MadSci Network: Astronomy|
Questions regarding space/time expansion? Is it possible to physically or mathematically describe a quantity of mass per given volume that will halt and/or reverse the expansion of space time locally over a given set of geometric limits and yet still allow the rest of the universe to continue expanding virtually unaffected? Am I describing a black hole, and if so, do black holes experience a big crunch similar, yet different, to that which may await our universe? Is it a degree of mass or mass per unit volume? Are there differences? Could the cosmic microwave background radiation be Hawking's Radiation given off by the universe. Could that explain it's omnipresence? If so, where does the other particle of the virtual pair radiate off to? Thank you.
Re:Questions regarding space/time expansion?
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