If we are interested in a phenomena that can only be detected experimentally, how do we come to have knowledge about unobservable entities?
In the case of black holes, by turning the whole Earth into what is essentially one large satellite dish, scientists from around the world have captured the first image of a black hole.
Sometimes we need to be shown what we can’t see. Afterwards, we are changed forever.
Indeed, seeing is believing. It is also the first step in understanding.