Good question. Most mainstream cosmologists consider plasmas to be merely hot gasses... without electrical charge or flow. They fail to recognize that electrons flow through plasmas both in the laboratory and at the galactic level. According to the Electric Universe theorists, it is the flow of electrons in the plasma and the electromagnetism created by the flows that cause the millions of degrees of heat.
Plasma and electrical discharge phenomena are scalable from the micro to the macro. What we see in the plasma lab is duplicated in the space between stars and planets.
Plasmas do strange things over intersteller distances that are contrarian to gravitic theory. Check out Herbig Haro objects where spiral plasmas hold together in a columnar shape for upwards of 20 light years away from the originating star.
Herbig-Haro object HH47
imaged by the Hubble Space
Telescope. The scale bar
represents 1000 Astronomical
Units, equivalent to about
20 times the size of our
solar system, or 1000
times the distance from the
Earth to the Sun
Herbig Haro 47 Animation over 5 years
Herbig Haro 49/50
Herbig Haro 34
"Explanation: Some features of HH-34 are understood -- some are not. At the core of Herbig-Haro 34 lies a seemingly typical young star. This star, though, somehow ejects energetic "bullets" of high-energy particles, appearing as red streaks toward the lower right of the this image. Astronomers speculate that a burst of these particles might rebound when gas from a disk surrounding the star momentarily collapses onto the star. Visible near the end of each light-year long jet is a glowing cap. HH-34 lies about 1500 light-years away in the Orion Nebula star-forming region. The cause of the large arc of gas on the upper left known as the waterfall remains unexplained." - Nasa
If you magnify the red "jet" of "particle bullets" in HH-34, you can see the vague shape of a double spriral which plasma/electrical universe cosmologists tell us are paired Birkeland currents where electrons are flowing in opposite directions in a double sheath that keeps the "jet" cohesive over light years' distances.
Until astronomers start to recognize that currents flow throughout space, they will be at a loss to understand what they keep being surprised at finding.
Now they have found a surprising, filamental, hot, "gaseous" connection between Galaxies... spanning millions of light years. . . and cannot understand what holds the filaments together over such tremendous distances.