Mysteries of the Universe: Black hole and Worm hole

What is a black hole?
a black hole is a region of spacetime. The gravity there is is so strong that nothing can escape from its pull.
Is black hole really a 'hole'in space?
No it's not a hole. Black hole is an object like any other object in space but it's extremely dense.
And because of its extreme density it has an extreme gravity, everything including light is pulled towards it.
Then why do we call it as a black 'hole' ?
As mentioned in the above lines it has an extreme gravity because of its extreme density,everything that falls into it is trapped forever ,that's why it is term as a 'hole'.
What happens when we try to go inside a Black hole?
If a human tries to go inside a Black hole his body will be torn apart because of its extreme gravity.
What is a wormhole?
just imagine wormhole as a tunnel that has two ends at different points in space.
Is travelling through a wormhole possible?
Yes,something that falls into a wormhole can go through it to the other end.
But there is no evidence for the existence of a wormhole yet.

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