Oh, dark matter. That’s the stuff that an equation says -must- exist and must be MOST of the universe. We look for it and cant find it. We cant see it, locate it, or describe it. It simply isn’t there. So instead of wondering if the science behind the equation is wrong... we conclude its invisible.
And that folks, is physics today.
It would be like having a educated guess that your friend is standing by third base in Yankee Stadium. You go there and cannot find him. Instead of going back over the clues that made you think he was there, you conclude he is invisible. You angrily berate anyone who tells you he isn’t there.
I Don’t Know who’s on Third Base.