Hubble finds first galaxy in the local universe without dark matter
&gt; Merritt remarks: &quot;There is no theory that predicts these types of galaxies [without dark matter] — how you actually go about forming one of these things is completely unknown.&quot;<p>Is there a theory that predicts galaxies <i>with</i> dark matter, or states how they come to be that way? I thought the whole dark matter concept was &quot;we don&#x27;t know anything about it&quot;.