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Unless, say, there were enough such parallel worlds to smudge the effects on smaller than galactic scales.
by QuantumGravy 10y ago
Unless, say, there were enough such parallel worlds to smudge the effects on smaller than galactic scales.
- pavel_lishin 10y agoI'm not thinking "parallel worlds" in the Sliders sense, just in the "dark matter" sense. If there were "enough" to blur it out, each one would likely not have enough mass to really have a complete universe. On the other hand, if we only make up 15% of the known mass of the universe, that's room enough for 5 more parallel shadow universes living beside us! Or maybe dark matter just doesn't need as much mass for intelligent life to develop. Who says they need stars and planets?
- QuantumGravy 10y agoParallel as in further "up" and "down" along some unperceived Nth-dimensional axis sorta thing, as I'm imagining it. We'd be some percentage of dark matter to every other "known universe", ourselves, in a cosmological principle sense, not particularly unique or special. If the gravitational force also falls off along such an axis, assumptions about what percentage each parallel universe consists of becomes more complicated. The nearer ones could be more massive than otherwise expected. Each successive parallel universe would also contribute a smaller amount to the whole.