Question

What do you mean by black hole in universe?
All the moderators are requested not to spam or delete my question because it is related to study.

Answer 1

it is a type of hole in the universe with is black in colour and tracks everything including light gravity and all..

Answer 2

1. Black holes are incredibly massive, but cover only a small region.

2. Because of the relationship between mass and gravity, this means they have an extremely powerful gravitational force.

3. Virtually nothing can escape from them — under classical physics, even light is trapped by a black hole.

4. The theory of general relativity predicts that a sufficiently compact mass can deform spacetime to form a black hole.