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 Originally Posted by Renton
The farthest that my layman's brain could get on it is that it's the default tendency of empty space to expand when not acted upon by a dominant gravity field. It's more a property of space itself than it is actual stuff i.e. dark matter. Dark matter to me is far more mysterious.
I'd love to know if you have a source for the underlined bit. As I understand it, this has not been shown.
The rest is hypothetical, but I hesitate to even argue with it, because it's at least plausible that you're on he right track.
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This kinda ties in with BID's question. If dark energy is a property of spacetime, then it seems like 'empty space' is ultimately a perpetual motion machine... While this is fine with me personally, the physicist in me is appalled. Violating the conservation of energy is kinda unthinkable to me at this point in my life. It's so evident to me that this conservation holds in our universe that I cannot truly believe that there is some mystical breaking of that law going on all around me.
It is a purely emotional response, though.
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