Who Painted the Black Hole???

What is the color of a Black Hole?

What an absurd question, isn't it? On second thoughts though, it is not so crazy!

Black holes aren't black! They emit gamma and x-ray beams as a result of a very weird phenomena which comes about as a result of a lot of crazy ideas introduced in the twentieth century.

The uncertainty principle doesn't allow us to say something is completely empty, so we say that a couple of "virtual" particles keep on appearing and disappearing. Simple, isn't it?

Now, if one of these fall into a black hole, the other can escape out and we will be able to see this as been emitted from the black hole. So black holes aren't black afterall !! However, it is true that nothing can escape its "event horizon" once within it.

Its a bit like the black box of aeroplane, its orange!! I wonder who gives such names!!