Posthuman Blues

Strange Setup: Andromeda's Satellite Galaxies All Lined Up

That nearly 80 percent of Andromeda's satellite galaxy mass is located within a single plane is highly unusual and can't be accounted for by traditional theories of galaxy formation, Grebel said.

(Via The Anomalist.)

OK -- you know where I'm going with this: What if this is some sort of engineering marvel constructed by an intergalactic hypercivilization? Rest assured, I don't think this is a likely (or even very tenable) explanation. But it's fun to consider.