The Secret Inside the Dark Hole

Space is full of many amazing things.

One of the most strange things is a black hole.

A black hole is like a very strong vacuum in the sky.

It has a lot of gravity that pulls everything toward it.

Nothing can escape from a black hole, not even light.

The outside edge of a black hole is called the event horizon.

Once you cross this edge, you cannot go back.

Inside the black hole, the gravity becomes even stronger.

Scientists think there is a tiny point at the center.

They call this tiny point a singularity.

Here, everything is crushed into a very small space.

Time and space do not work the same way inside.

We do not know for sure what happens at the very bottom.

Some people imagine it is a door to another place.

For now, it remains a big mystery in our universe.