Not invisible, just unknown. “Dark matter” really is a unique instance of physics being humble. It’s their way of saying, “there seems to be much more matter in the universe than we can explain.”
Dark matter isn’t necessarily dark, although most of it is probably far away enough from any light source like a star to be pretty dimly lit. “Dark” simply means “unknown,” the way that Africa used to be called “the Dark Continent,” or pre-Guttenberg, post-Alexandria European history was called “the Dark Ages.”
Physics is being humble, not just hiding a mistaken path. And dark matter is like the dark continent, or Dark Ages. Got it, LOL
Just had my mind blown on a physics forum in a rather different manner