I've been thinking
I found a strong correlation between "gravity anomalies" occurring within galaxies and the "expansion" of the Universe. Such as anomalies that defy gravity and anomalies that approximate gravity effects without detectable matter. Mainstream theories pin this to "dark energy" and "dark matter" respectively. But IMHO, there maybe no exotic processes involved. Neither dark matter nor dark energy is involved in these "gravity anomalies. References below this post.
The correlating factor between intergalactic and extragalactic gravitational anomalies is strong polarization of light. For example, of high red-shift celestial objects and light along the galactic plane.
Mainstream theories break this down via two different processes (dark energy and dark matter). However I found a single process that can reproduce both cosmological "expansion" of the universe and the anomalous orbital velocities (gravity anomaly) of stars around galaxies.
When gravity is fully or partially blocked along a boundary or region, it will reproduce both the anomalously high orbital speed of stars around galaxies and also cause far away galaxies to "defy" gravity and accelerate away from us.
I think some of the processes that causes strong polarization of light as it travels through space (electromagnetic fields, ions, relativistic particles, dust, or the combined effects of these agents, etc) present in both intergalactic space and in abundance along the galactic plane may also be partially blocking gravity fields either directly or indirectly.
It may sound ridiculous or even dumb and stupid but only IF you assume my theory only accounts for blocking the gravity field of a local celestial body such as that of a planet, or a star, or a whole galaxy.
However, if you also account for the gravitational energy of the whole universe, you'll come up with some insane numbers because the gravitational energy density of the whole universe would be many orders of magnitude greater than Earth's and much closer to the energy density at the event horizon of a black hole.
For example, the Universe's Schwarzschild Radius exceeds its observable boundary. In a manner, roughly-speaking, though not necessarily true, our universe may be a really really large black hole and we're living inside of it. But whether this statement is true or not, it does show ridiculous amounts of gravitational energy filling every cubic cm of space.
We don't normally feel the black-hole levels of gravity density because it's pulling in all directions canceling each other out resulting to a net force of zero. But if you can create an energy field that can block gravity, the space near this field will only see cosmic gravity moving in more or less same direction - generally in a direction moving away from the gravity-blocking field. This can either cause far away galaxies to accelerate away from us or for galaxies to manifest gravitational pull well in excess of its detectable mass - if the gravity-blocking field fills the void between galaxies and exists in greater densities in space surrounding galaxies.
Based on this hypothesis, Far away galaxies are not really being repelled away but rather "accreting" or merging towards distant galactic clusters no longer detectable due to extreme red-shifts. Not otherwise possible if gravity is propagating unimpeded throughout the Universe.
The proposed shapes of the Universe, many that is pinched would support the "condensation theory" than expansion.
One might expect via this theory the Earth's Van Allen belts may produce similar effect. However, the effect may be negligible because the ions involved are "light", for example, individual protons or electrons.
So far, the effect may only be manifesting whenever heavy ions are involved and in large quantities only possible in intergalactic space. Amplifying the effect down to practical vehicular size may require the heaviest nuclei that can be contained with powerful magnetic fields and lasers.
I'm not sure how feasible this concept is. But summing it up, a gravity blocking field would separate extremely powerful but opposing cosmological gravitational fields into more or less monodirectional fields which might better explain cosmological patterns in far less complicated fashion and might be utilized some day and even in the near-future, practical faster-than-light interstellar / deep space travel technology.
References:
Heavy ions surround Galaxies
www.nasa.gov
Light polarization around our galaxy
www.nasa.gov
Relation of polarized light and red-shifted objects
Magnetic field gradients around galaxies
www.mdpi.com
Schwarzschild radius of Universe
Shape of the Universe
Dipole Repeller
en.wikipedia.org
Galactic repulsion

I found a strong correlation between "gravity anomalies" occurring within galaxies and the "expansion" of the Universe. Such as anomalies that defy gravity and anomalies that approximate gravity effects without detectable matter. Mainstream theories pin this to "dark energy" and "dark matter" respectively. But IMHO, there maybe no exotic processes involved. Neither dark matter nor dark energy is involved in these "gravity anomalies. References below this post.
The correlating factor between intergalactic and extragalactic gravitational anomalies is strong polarization of light. For example, of high red-shift celestial objects and light along the galactic plane.
Mainstream theories break this down via two different processes (dark energy and dark matter). However I found a single process that can reproduce both cosmological "expansion" of the universe and the anomalous orbital velocities (gravity anomaly) of stars around galaxies.
When gravity is fully or partially blocked along a boundary or region, it will reproduce both the anomalously high orbital speed of stars around galaxies and also cause far away galaxies to "defy" gravity and accelerate away from us.
I think some of the processes that causes strong polarization of light as it travels through space (electromagnetic fields, ions, relativistic particles, dust, or the combined effects of these agents, etc) present in both intergalactic space and in abundance along the galactic plane may also be partially blocking gravity fields either directly or indirectly.
It may sound ridiculous or even dumb and stupid but only IF you assume my theory only accounts for blocking the gravity field of a local celestial body such as that of a planet, or a star, or a whole galaxy.
However, if you also account for the gravitational energy of the whole universe, you'll come up with some insane numbers because the gravitational energy density of the whole universe would be many orders of magnitude greater than Earth's and much closer to the energy density at the event horizon of a black hole.
For example, the Universe's Schwarzschild Radius exceeds its observable boundary. In a manner, roughly-speaking, though not necessarily true, our universe may be a really really large black hole and we're living inside of it. But whether this statement is true or not, it does show ridiculous amounts of gravitational energy filling every cubic cm of space.
We don't normally feel the black-hole levels of gravity density because it's pulling in all directions canceling each other out resulting to a net force of zero. But if you can create an energy field that can block gravity, the space near this field will only see cosmic gravity moving in more or less same direction - generally in a direction moving away from the gravity-blocking field. This can either cause far away galaxies to accelerate away from us or for galaxies to manifest gravitational pull well in excess of its detectable mass - if the gravity-blocking field fills the void between galaxies and exists in greater densities in space surrounding galaxies.
Based on this hypothesis, Far away galaxies are not really being repelled away but rather "accreting" or merging towards distant galactic clusters no longer detectable due to extreme red-shifts. Not otherwise possible if gravity is propagating unimpeded throughout the Universe.
The proposed shapes of the Universe, many that is pinched would support the "condensation theory" than expansion.
One might expect via this theory the Earth's Van Allen belts may produce similar effect. However, the effect may be negligible because the ions involved are "light", for example, individual protons or electrons.
So far, the effect may only be manifesting whenever heavy ions are involved and in large quantities only possible in intergalactic space. Amplifying the effect down to practical vehicular size may require the heaviest nuclei that can be contained with powerful magnetic fields and lasers.
I'm not sure how feasible this concept is. But summing it up, a gravity blocking field would separate extremely powerful but opposing cosmological gravitational fields into more or less monodirectional fields which might better explain cosmological patterns in far less complicated fashion and might be utilized some day and even in the near-future, practical faster-than-light interstellar / deep space travel technology.
References:
Heavy ions surround Galaxies

Intergalactic Upcycling: Recycled Gas Feeds a Massive Galaxy in the Early Universe
Scientists have observed a massive galaxy at redshift 2.3, discovering that streams of enriched gas, containing elements heavier than helium, spiral into the galaxy, providing additional fuel for rapid star formation. This supports the theory of enriched gas recycling during galaxy formation in the
scitechdaily.com

Clumpy, Recycled Gas From Stars Surrounds Milky Way - NASA
The Milky Way galaxy is in the recycling business. Our galaxy is surrounded by a clumpy halo of hot gases that is continually being supplied with

Light polarization around our galaxy

Magnetic Map of Milky Way - NASA
The magnetic field of our Milky Way galaxy as seen by the Planck satellite, a European Space Agency mission with significant NASA contributions. This image was compiled from the first all-sky observations of polarized light emitted by interstellar dust in the Milky Way.

Relation of polarized light and red-shifted objects
1993Ap&SS.205..203C Page 203
adsabs.harvard.edu
Magnetic field gradients around galaxies

Magnetic Fields and Halos in Spiral Galaxies
Radio continuum and polarization observations reveal best the magnetic field structure and strength in nearby spiral galaxies. They show a similar magnetic field pattern, which is of spiral shape along the disk plane and X-shaped in the halo, sometimes accompanied by strong vertical fields above...

Schwarzschild radius of Universe
OSF
osf.io
Shape of the Universe
Geometry of the Universe
pages.uoregon.edu
Dipole Repeller

Dipole repeller - Wikipedia
Galactic repulsion
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