• As a person (hypothetically) is pulled towards singularity, the difference in gravity is greatly felt, mainly due to the mass of the black hole being concentrated in an infinitely tiny point.
• The body is stretched and squeezed, as the extreme gravity changes the shape of everything, including the surrounding light, something known as spaghettification.
• Time Dilation makes the outside universe look like it's in a fast forward mode.

The black hole’s center is like a dark future which cannot be seen, so no one knows what is beyond the tiny point that looks like a giant ball to the person going in. It’s almost like one is landing to the surface of a dark planet, which looks like a black geometric sphere with no features.