What's Inside a Black Hole?

What is inside a Black Hole?
The answer is that no one knows it.
The name black hole officially appeared around 1966.
Black holes have two parts: the event horizon and the singularity. The event horizon is where gravity is so strong that nothing can escape, not even light. The singularity is a point at the center of a black hole that is highly dense and contains the entire mass of the black hole.
There is a theory that the Black Holes are not just masses of nothingness but beyond the event horizons and the singularity's starting point, possibly a portal. A portal to intergalactic travel. If we could create a technology to travel faster than the speed of light, we could pass through that portal.

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