Treat this article with skepticism. I think the journalist has badly misjudged the current consensus in the field when they say:<p>&quot;There are still a few die-hards who do not believe in hooperons. They suggest that if an ensemble of millisecond pulsars (dead stars that rotate hundreds of times a second) were buried in the Milky Way’s middle, that might do the trick.&quot;<p>The way I hear it, a population of new point sources is a better match for the Fermi data than dark matter --- the excess is &quot;clumpy&quot;, indicating point sources, when you would expect a dark matter signal to be diffuse.