Scientists Say We Were Wrong About the Big Bang and the Universe
https://www.youtube.com/watch?v=DaouTS072ew
Sabine Hossenfelder: "The solution of general relativity that describes the expanding universe is a solution on average; it is good only on very large distances. But the solutions that describe galaxies are different - and just don't expand. It's not
that galaxies expand unnoticeably, they just don't. The full solution, then, is both stitched together: Expanding space between non-expanding galaxies."
http://backreaction.blogspot.bg/2017/08/you-dont-expand-just-because-universe.html
So Hossenfelder tells us that cosmologists apply the expansion solutions only to voids deprived of galaxies; to galaxies and galactic clusters they apply nonexpansion solutions. Why do cosmologists resort to this trick? Because, if they applied expansion
solutions to galaxies and galactic clusters, observations would immediately disprove the theory. If the universe were expanding, the competition between expansion and gravitational attraction would distort galaxies and galactic clusters - e.g. fringes
only weakly bound by gravity would succumb to expansion and fly away. No distortions observed. The universe is clearly not expanding.
Then how about the cosmological (Hubble) redshift? It is due to light gradually slowing down as it travels through intergalactic space. The idea that vacuum slows down light is largely discussed but only in terms of quantum gravity. The implication that
the Hubble redshift might be due to gradually decreasing speed of starlight is persistently ignored:
"...in some quantum-gravity models, the speed of photons in gamma rays would be affected by the grainy nature of spacetime..."
https://fqxi.org/community/articles/display/255
Sabine Hossenfelder: "It's an old story: Quantum fluctuations of space-time might change the travel-time of light. Light of higher frequencies would be a little faster than that of lower frequencies. Or slower, depending on the sign of an unknown
constant. Either way, the spectral colors of light would run apart, or 'disperse' as they say if they don't want you to understand what they say. Such quantum gravitational effects are miniscule, but added up over long distances they can become
observable. Gamma ray bursts are therefore ideal to search for evidence of such an energy-dependent speed of light."
http://backreaction.blogspot.fr/2017/01/what-burst-fresh-attempt-to-see-space.html
"Some physicists, however, suggest that there might be one other cosmic factor that could influence the speed of light: quantum vacuum fluctuation. This theory holds that so-called empty spaces in the Universe aren't actually empty - they're teeming with
particles that are just constantly changing from existent to non-existent states. Quantum fluctuations, therefore, could slow down the speed of light."
https://www.sciencealert.com/how-much-do-we-really-know-about-the-speed-of-light
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Pentcho Valev
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