Discussion:
Preposterous (Theory of) Expansion of the Universe
(trop ancien pour répondre)
Pentcho Valev
2023-03-02 21:41:14 UTC
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Cosmologists teach that space inside galaxies and galactic clusters does not expand at all. They reject the scenario in which expansion inside galaxies and galactic clusters does occur but is overcome by gravitational attraction. According to their models, even the slightest gravitational attraction blocks any expansion:

"Is the space inside, say, a galaxy growing but overcome by the gravitational attraction between the stars? The answer is no. Space within any gravitationally bound system is unaffected by the surrounding expansion."


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...It is only somewhere beyond the scales of galaxy clusters that expansion takes over." https://www.forbes.com/sites/startswithabang/2017/07/28/most-things-dont-actually-expand-in-an-expanding-universe/

"Expanding space between non-expanding galaxies" (more precisely, between non-expanding galactic clusters) is preposterous per se, and its implications are preposterous as well. Consider, for instance, the famous stretching of light caused by expansion:

"As light travels towards us from the distant galaxies, it is stretched over time by the ever expanding space it is travelling through. The longer it travels, the more the wavelengths are increased (reddened)." https://www.wwu.edu/astro101/a101_hubble_redshift.shtml

So light is stretched as it travels in the space between galactic clusters, then stretching stops as the light enters a cluster, then stretching continues as the light leaves the cluster, etc. Idiotic, isn't it?

Why do cosmologists apply expansion solutions only to voids where there is no gravitational attraction? Because, if they applied expansion solutions to spaces where objects attract one another gravitationally, observations would immediately disprove the expansion theory. Here is why:

If expansion is actual inside galaxies and galactic clusters, the competition between expansion and gravitational attraction would distort those cosmic structures - e.g. fringes only weakly bound by gravity would succumb to expansion and fly away. And the theory, if it assumes that intragalactic expansion does occur, will have to predict distortions.

But no distortions are observed - there is really no expansion inside galaxies and galactic clusters. And cosmologists, without much publicity, have decided to apply the expansion theory only to gravity-free space. Nothing new. Theoretical physics has been a dishonest ideology since 1905:

"This paper investigates an alternative possibility: that the critics were right and that the success of Einstein's theory in overcoming them was due to its strengths as an ideology rather than as a science. The clock paradox illustrates how relativity theory does indeed contain inconsistencies that make it scientifically problematic. These same inconsistencies, however, make the theory ideologically powerful...The gatekeepers of professional physics in the universities and research institutes are disinclined to support or employ anyone who raises problems over the elementary inconsistencies of relativity. A winnowing out process has made it very difficult for critics of Einstein to achieve or maintain professional status. Relativists are then able to use the argument of authority to discredit these critics. Were relativists to admit that Einstein may have made a series of elementary logical errors, they would be faced with the embarrassing question of why this had not been noticed earlier. Under these circumstances the marginalisation of antirelativists, unjustified on scientific grounds, is eminently justifiable on grounds of realpolitik. Supporters of relativity theory have protected both the theory and their own reputations by shutting their opponents out of professional discourse...The triumph of relativity theory represents the triumph of ideology not only in the profession of physics bur also in the philosophy of science." Peter Hayes, The Ideology of Relativity: The Case of the Clock Paradox https://tandfonline.com/doi/abs/10.1080/02691720902741399

Since there is no expansion inside galaxies and galactic clusters, there is no expansion anywhere else.

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Pentcho Valev
Pentcho Valev
2023-03-04 21:29:35 UTC
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"Indeed, Wilczek began his lecture by speaking of the profound analogy between materials and vacuum. What our naked senses perceive as empty space turns out to be a riotous environment of virtual particles fluorescing and dying away on extremely small scales of space and time, as well as fog-like fields and condensates, which permeate all space and dictate the properties of elementary particles. To give an analogy for this perplexing new picture of reality, Wilczek asks us to imagine intelligent fish in a world surrounded by water. Such creatures would perceive the water surrounding them as their version of empty space or a vacuum. "The big idea I want to convey is simply this: We're like those fish," he said. What our senses perceive as empty space is better understood as a substance, a material." https://asunow.asu.edu/20170208-finding-nothing-conversation-frank-wilczek

Paul Davies: "This leads to the prediction of vacuum friction: The quantum vacuum can act in a manner reminiscent of a viscous fluid." http://philpapers.org/rec/DAVQVN

"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

The idea that vacuum slows down light has been largely discussed but only in terms of quantum gravity. The implication that the cosmological (Hubble) redshift might be due to slow speed of light (and therefore the universe is not expanding) is blocked by crimestop:

"...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

George Orwell: "Crimestop means the faculty of stopping short, as though by instinct, at the threshold of any dangerous thought. It includes the power of not grasping analogies, of failing to perceive logical errors, of misunderstanding the simplest arguments if they are inimical to Ingsoc, and of being bored or repelled by any train of thought which is capable of leading in a heretical direction. Crimestop, in short, means protective stupidity."

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Pentcho Valev
Pentcho Valev
2023-03-06 07:34:18 UTC
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"You build these machines not to confirm the paradigm, but to break it," said JWST scientist Mark McCaughrean, at the European Space Agency. "You just don't know how it will break." As light from a very distant galaxy travels across the cosmic abyss, it is stretched by the expansion of the universe."


Here is how the paradigm will break. Replace

"it is stretched by the expansion of the universe"

with

"it is slowed down by vacuum 'friction', in a non-expanding universe".

See more: https://twitter.com/pentcho_valev

Pentcho Valev

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