Isn’t Dark matter theoretical? If so how do they know “Galaxies reside... on a backbone of dark matter”.
“dark matter” is science talk for “we have no clue what that stuff is...”
;-)
This only seen in the imagination of the researchers. I don’t think there are any structures as one would visualize, only paths that the galaxies seems to follow and clustering of galaxies along lines with voids between them.
Rydberg matter in space has been found to generate a red-shift of distant light.
You: OK, so that means that our whole solar system could be like one tiny atom in the fingernail of some other giant being? This is nuts! That means that one tiny atom in my fingernail could be...
Science : ...could be one tiny little universe!