Return of the Dark Matter

As a followup to my last post (from almost a year ago, my does time fly) apparently now they've proven dark matter must exist. Can't we all just agree on the laws of physics once and for all and be done with it? No? Well, okay then.

The Einstein Strikes Back

So apparently theories of so-called "dark matter" have all been based on explaining anomalous experimental data that turns out to just be rounding errors.

Now F I Cooperstock and S Tieu of the University of Victoria have reworked the problem using general relativity in place of Newtonian gravity, and they find no need to assume the existence of a halo of exotic dark matter to fit the observed rotation curves.

(via Slashdot.)