Question

what is black hole and how much long and deep​

Answer 1

Answer:

Explanation:

A black hole is a region of spacetime where gravity is so strong that nothing—no particles or even electromagnetic radiation such as light—can escape from it.

It can't be determined that how deep or long black blackhole is

Answer 2

Answer:

Black hole is a region of spacetime where gravity is so strong that noone or nothing can escape from it.