I don't need to explain how it works, try paying attention to actual experiments....
ridiculously thin? comparable to the mass of all the stars in the galaxy......
NASA - The Milky Way's Hot Gas Halo
"Data from NASA's Chandra X-ray Observatory was used to estimate [link to press release] that the mass of the halo is comparable to the mass of all the stars in the Milky Way galaxy. If the size and mass of this gas halo is confirmed, it could be the solution to the "missing-baryon" problem for the Galaxy."
And this is just the "warm gas". They can't even bring themselves to say plasma...
"Other studies have shown that the Milky Way and other galaxies are embedded in warm gas, with temperatures between 100,000 and one million degrees, and there have been indications that a hotter component with a temperature greater than a million degrees is also present. This new research provides evidence that
the mass in the hot gas halo enveloping the Milky is much greater than that of the warm gas."
So you don't even want to get into a discussion about how much is actually there, because the hot plasma halo is much greater than the warm plasma halo, which by itself compares to the mass of all the stars......
You just don't understand quantum physics and so have no answer how light could pass through without being scattered so you pretend it isn't there....
It's the same story for that "dust" (read ionized particles) that was found to be 30 times greater than they believed coming into the solar system....