""If spacetime is a kind of fluid, then we must also take into account its viscosity and other dissipative effects, which had never been considered in detail".
Liberati and Maccione catalogued these effects and showed that viscosity tends to rapidly dissipate photons and other particles along their path, "And yet we can see photons travelling from astrophysical objects located millions of light years away!" he continues. "If spacetime is a fluid, then according to our calculations it must necessarily be a superfluid. This means that its viscosity value is extremely low, close to zero".
"We also predicted other weaker dissipative effects, which we might be able to see with future astrophysical observations."
https://phys.org/news/2014-04-liquid-spacetime-slippery-superfluid.html
"100% plasma, as are all stars. Plasma makes up nearly 100% of the interplanetary, interstellar and intergalactic medium."
"Plasma react very strongly to electromagnetic forces, and is the dominant force in many cosmic plasmas, e.g. stellar surfaces, active galactic nuclei, and, interplanetary, interstellar and intergalactic space"
https://www.plasma-universe.com/
"Towards the end of the nineteenth century the prevailing scientific hypothesis was that light, like air for sound or ripples through water, needed some substance to propagate through. How else could the waves of light travel through space? The substance became known as the "luminiferous aether"."
https://etheronics.org/index.php?page=physics
"ether, also spelled aether, also called luminiferous ether, in physics, a theoretical universal substance believed during the 19th century to act as the medium for transmission of electromagnetic waves (e.g., light and X-rays), much as sound waves are transmitted by elastic media such as air."
https://www.britannica.com/science/ether-theoretical-substance
"The basic idea of the Electric Universe Theory (EUT), also known as Plasma Cosmology (PC, although PC is really a subset of EUT), is that everything in the Universe is connected, mainly via electric currents flowing through plasma."
https://thehonestscientist.com/electric-universe/
"electromagnetic fields into electric currents"
https://www.esa.int/Enabling_Support/Space_Engineering_Technology/Electromagnetics_and_Space_Environment
"HOST PADI BOYD: Beyond gases, there’s another state of matter called plasma. And it makes up 99.9% of the observable universe. This is completely different from plasma in our blood. We’re talking about a state of matter, that’s similar to a gas but with different properties."
https://www.nasa.gov/mediacast/plasma-plasma-everywhere
"The solar wind is a stream of charged particles released from the upper atmosphere of the Sun, called the corona. This plasma mostly consists of electrons, protons and alpha particles with kinetic energy between 0.5 and 10 keV. The composition of the solar wind plasma also includes a mixture of materials found in the solar plasma: trace amounts of heavy ions and atomic nuclei such as C, N, O, Ne, Mg, Si, S, and Fe. There are also rarer traces of some other nuclei and isotopes such as P, Ti, Cr, 54Fe and 56Fe, and 58Ni, 60Ni, and 62Ni."
https://en.wikipedia.org/wiki/Solar_wind
"Measurements from NASA’s New Horizons spacecraft are revising our estimates of one key property of the interstellar medium: how thick it is. Findings published today in the Astrophysical Journal share new observations that the local interstellar medium contains approximately 40% more hydrogen atoms than some prior studies suggested. The results unify a number of otherwise disparate measurements and shed new light on our neighborhood in space."
"This result confirmed a 2001 study which used Voyager 2 – about 4 billion miles away – to measure how much the solar wind had slowed by the time it arrived at the spacecraft. The slowdown, largely due to intervening interstellar medium particles, suggested a matching interstellar hydrogen density, about 120 hydrogen atoms in a quart-sized space.
But newer studies converged around a different number. Scientists using data from NASA’s Ulysses mission, from a distance slightly closer to the Sun than Jupiter, measured pickup ions and estimated a density of about 85 hydrogen atoms in a quart of space. A few years later, a different study combining Ulysses and Voyager data found a similar result."
https://www.nasa.gov/feature/goddard/2020/new-evidence-our-neighborhood-in-space-is-stuffed-with-hydrogen
"That hydrogen wall is the outer boundary of our home system, the place where our sun's bubble of solar wind ends and where a mass of interstellar matter too small to bust through that wind builds up, pressing inward. Our host star's powerful jets of matter and energy flow outward for a long stretch after leaving the sun — far beyond the orbit of Pluto. But at a certain point, they peter out, and their ability to push back the bits of dust and other matter — the thin, mysterious stuff floating within our galaxy's walls — wanes. A visible boundary forms. On one side are the last vestiges of solar wind. And on the other side, in the direction of the Sun's movement through the galaxy, there's a buildup of interstellar matter, including hydrogen."
https://www.foxnews.com/science/nasa-spotted-a-vast-glowing-hydrogen-wall-at-the-edge-of-our-solar-system