This proof of existence, appearing in an upcoming issue of The Astrophysical Journal Letters, does nothing to reveal what dark matter really is, however. “Over the years, we’ve pretty much ruled out all sorts of baryonic dark matter possibilities like brown dwarfs or black holes. We’re pretty much left with some new subatomic particles,” notes team member Dennis Zaritsky of the University of Arizona. “It’s a little embarrassing to claim we know anything about the universe when we don’t know what 90 percent of the matter out there is.”

God stuff?

Oh, btw the little video Sciam have is worth a watch.