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    Could a universal Oort cloud structure cause expansive acceleration?

    Thanks, it's pretty interesting stuff. I like it because it seems a lot simpler than adding this unknown, undetected Dark Energy. Occam's razor The question is, is it petering out because new data doesn't match, or just because it's not popular because accepting inhomogeneity would invalidate...
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    Could a universal Oort cloud structure cause expansive acceleration?

    I meant to say 'didn't already know', but I'm sure you realized that. As for the cosmological principle, it just seems like more of matter of convenience. It's basically, "Well, we can't predict things about the rest of universe unless it's all like our part of it, so we will assume it is"...
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    Could a universal Oort cloud structure cause expansive acceleration?

    Ah true, I had forgotten all about that. I remember having to solve that same problem for EM. Case closed.
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    Could a universal Oort cloud structure cause expansive acceleration?

    The FAQ didn't tell me anything that I didn't already know. Isotropy and Homogeneity follow from the cosmological principal. Which is really just saying that in any large sample of the universe, the amount and type of matter will be the same (homogeneity) and that in all directions the same...
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    Could a universal Oort cloud structure cause expansive acceleration?

    So it if has no center, then in every galaxy in the universe, there should be a nearly equal distribution of other galaxies in all direction. So do astronomers assume that this is the case? That no matter where you are in the universe, matter is ultimately even in all directions? I'm trying...
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    Could a universal Oort cloud structure cause expansive acceleration?

    But why? We can measure our galaxies position relative to other galaxies. Are you saying there is no place in the universe where other galaxies are not evenly distributed in all directions?
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    Could a universal Oort cloud structure cause expansive acceleration?

    Could a universal "Oort cloud" structure cause expansive acceleration? Could there be a giant sphere of invisible non-reactive matter (neutrinos?), left over from the big bang, so massive that it's gravity is pulling galaxies outward? I know the Oort cloud doesn't pull planets outward, but...
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    Center of the universe

    So every physics/astro student is told there is no center of the universe, imagine it like a balloon and every point expands equally from every point. Except, there is a center of a balloon. Right in the middle where the air is. The universe isn't the flat surface of a balloon, it is 3...
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