Calpundit has cat blogging on Fridays. I have -- what? Nothing. Nothing at all.

But last Friday's giant guinea pig story was a hit, and people seem to want more. So I'll give "random Friday science story" a shot.

And I've got a controversial one today.

Some scientists claim we (as in, "the Milky Way") are being invaded by the Sagitarius galaxy.

On the other hand, others argue that Sagitarius, a dwarf galaxy (like, proably only several million stars in size), is nothing more than a tasty morsel (figuratively) for our self-assured, self-confident, and way inclusive Milky Way.