DARK MATTER LIVES !!
Seems that the empty space between stars somehow creates "tension" that results in the spontaneous creation of matter.
Now, why something that's empty, devoid of anything, should have tension, is beyond me. And how matter is created from nothing (except the aforementioned tension), is equally baffling.
That must be the answer, though, and the reason scientists can't find it. There's too much matter in their lab! Dark matter only exists when there's nothing else there! And you'll never be able to observe it, because as soon as you get close to it, space is no longer empty there. Tension and dark matter disappear!
Anyone who's ever tried to find the pot of gold at the end of the rainbow will understand the logic...
Well, we can’t “see” quarks either, they have never been isolated or directly observed. But there is considerable evidence that they actually exist. It seems possible to me that some things in nature are seen, not directly, but only in their effects.