[Filo]

The existence of dark mater is still pretty controversial I believe.

No, the existence of "dark matter" is pretty much assured. It's the composition, origin and other properties which are still hotly debated.

But something is out there with the "missing" mass.

[Lonesome in Massachussets]

You are probably right, but I can never anticipate the ever changing past.

[DManA]

I think of dark matter as a kind of cipher. A place holder that fills out the theory until they figure out what’s really is going on.