Question

what is black hole...???

Answer 1

Black hole is a region of spacetime including very strong gravitational force that nothing can escape from inside it  including particles and also light.
It is found in space .

Answer 2

Greetings..!

A black hole is an extraterrestrial object , which has enormous gravitational force. It's gravitational pull is so high that it pulls everything towards it . Not even light and tiny particles can escape from it . Two black holes can combine with each other and form a new,bigger one with more force.Black holes are one of the most probable and dangerous possibilities of how our earth,even our galaxy can get destroyed.

Scientists pose a possibility of black holes being a worm hole. A worm hole is an imaginary teleportation hole . If an object enters it , it can teleport to another place where the other end of the black hole ends.