What is in a Black Hole?
A black hole has a boundary, called the event horizon. This is the point where gravity is strong enough to drag light back, and prevent it from escaping.
We can’t see what lies inside the event horizon of a black hole because light or anything from there can never reach us. Even if we could send a spacecraft or explorer into the black hole, it could never send back information.
Current theories predict that all the matter in a black hole is piled up in a single point at the center, but we are yet to understand how this central singularity works. To properly understand the black hole center requires a fusion of the theory of gravity with the theory that describes the behavior of matter on the smallest scales, called quantum mechanics. We call this scientific theory quantum gravity, but how it works is still unknown. In the future, the study of black holes may unravel more answers.
