Bizarre Dark Matter Galaxy J0613+52 Discovered With Seemingly No Stars Whatsoever

"What we do know is that it's an incredibly gas rich galaxy," O'Neil says. O'Neil et al. consider the object to be a "primordial" galaxy, i.e. a galaxy in the original state in which "normal" galaxies might have started out. Just in this case, it's a pretty close galaxy. which we see it as it was 270 million years ago. The question immediately arises, why star formation didn't start in this galaxy? In fact, it's very old, so how can it be "primordial?" Is it because it is alone in the universe?

String theorists predict that dark matter results from a "dark dimension"

We shouldn't ignore the most trivial hypothesis, that substantial portion dark matter is formed with heavily ionized atoms and dust particles (compare the Plasma Universe theory in this regard). When atoms lose electrons which can be easily excited with light they become "dark" but still gravitating at distance. We can still see them as a galactic halo with X-ray telescopes. Their positive electric charge prohibits them against gravitational collapse though: a quazistable cloud of invisible dark matter gets formed. Note that all these nifty extradimensional models of dark matter struggle with explanation, what makes dark matter in some galaxies missing, whereas in some others it appears excessive.