Maybe it's just an unusually large quantity of dead stars from the earliest galaxies. Or maybe black holes die after a really long time, like when they've fully gobbled up a galaxy.
@9: It means that the universe may not have been as isotropic as estimated. It is not an amazing discovery, but it is interesting. The variations in the CMB more or less set some of the constraints to how cosmic inflation occurred (i.e. the reason for the universe being relatively smooth and isotropic is because of inflation, so less smoothness may be useful to constrain or test inflationary hypotheses). So high variations are interesting since there is no known method of looking earlier than the time the CMB formed. But be careful in overestimating the significance of what is observed in the CMB. Inflation was almost instantaneous, while the universe still had hundreds of thousands of years to equilibrate afterwards before it cooled enough to emit the CMB. So anything seen in the CMB is somewhat damped from what existed before inflation (not to mention, our local perspective of it).
Note: I've studied a decent amount of astronomy but I've never formally studied cosmology. So take what I say with a grain of salt.
Add this to the announcements about photons being "immortal" and there are some serious challenges to the entropy oriented 20th century cosmology.
http://malavenda.files.wordpress.com/201…
Note: I've studied a decent amount of astronomy but I've never formally studied cosmology. So take what I say with a grain of salt.