All of the possibilities are very weird.
The singularity at the center of ais the ultimate no man's land: a place where matter is compressed down to an infinitely tiny point, and all conceptions of time and space completely break down. And it doesn't really exist. Something has to replace the singularity, but we're not exactly sure what. It could be that deep inside a black hole, matter doesn't get squished down to an infinitely tiny point.
to its ultimate conclusion, explaining gravity in a natural way. And two, it makes it impossible for singularities to form inside black holes. As matter squishes down under the immense gravitational weight of a collapsing star, it meets resistance. The discreteness of space-time prevents matter from reaching anything smaller than the Planck length . All the material that has ever fallen into the black hole gets compressed into a ball not much bigger than this. Perfectly microscopic, but definitely not infinitely tiny.
This resistance to continued compression eventually forces the material to un-collapse , making black holes only temporary objects. But because of the around black holes, from our perspective in the outside universe it takes billions, even trillions, of years before they go boom. So we're all set for now.
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