Question

Is black hole called black hole because it is black?????

Answer 1

Explanation:

It is called "black" because it absorbs all the light that hits it, reflecting nothing, just like a perfect black body in thermodynamics. Under the theory of quantum mechanics black holes have a temperature and emit Hawking radiation, which makes them slowly get smaller.

Answer 2

Surrounding every black hole is an event horizon: the boundary between where an object could escape from the black hole's gravitational pull and where everything irrevocably falls towards the central singularity. But despite that no objects from inside the event horizon escapes, black holes aren't actually black.