[RightWhale]

Dark matter doesn't do much at all. It has gravity, but it neither emits nor absorbs nor reflects light. Nor does it interact with ordinary matter except by gravity.

[Red Badger]

Existentialist matter?.......It's not really there, but is there?.......

[AFreeBird]

So is dark matter everywhere in space? In our solarsystem, between stars, galaxies...?

[Southack]

"Dark matter doesn't do much at all. It has gravity, but it neither emits nor absorbs nor reflects light. Nor does it interact with ordinary matter except by gravity."

...if it even exists. That's something that hasn't even remotely been demonstrated.