What “candidate dark galaxy” means; Cloud9 comparison

3:34a massive dark matter halo that failed to form a population of stars. Hubble first identified it and now they've worked together with the ESA Uklid Observatory that's also in space to figure out some more stuff about it. It's got an extreme dark matter fraction, meaning 99.9% of this galaxy is dark matter. >> That's way off compared to the Milky Way, which is in the like '9s, 80s, '7s type of thing. Okay, this is this is really weird. Okay, >> we had actually previously done a story on on uh dark matter. >> Yeah. So, something called Cloud9. >> Yes, that's >> And that had no stars.