One of the issues with the big bang theory and observations of the cosmos is that there ought to be more stuff. The presence of dark matter must be there because we can measure its effects via gravitational waves. A possible explanation for why dark matter exists at all is that there is an anti-universe—the same as “our” universe but with neutrinos spinning the opposite way and time going backwards. If that’s true, it would be expanding in the opposite direction as the big bang.
See also:
- Absolute time does not exist and in an anti-universe relativity probably also exists
- The symmetry of a universe/anti-universe sounds similar to black hole / white hole theories and our universe existing inside of a black hole
Links to this note
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Redshift Is Not from Motion but from Expansion
One of the observations that supports the Big Bang theory is the redshift of galaxies. If the universe were static then the light that we observe would not be so redshifted (the wavelength of light gets stretched out making it more red). However, that doesn’t mean that galaxies are moving away from us, just that there is comic expansion puts greater distance between things.
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There is a patch of the cosmos which is 300 million light years across with significantly fewer galaxies. Where a typical section of the same size would have 2000 galaxies, the Great Nothing has 20.