In space where there is absolutely nothing quantum fluctuation creates pairs of atomic particles emerge, they exist for a moment and then destroy each other.
Each pair is a Ying and Yang, night and day, opposites which would not exist without each other. One has a negative mass and one has a positive mass.
What happens when a pair bumps up against a black hole? The positive particle has just enough mass to escape the black hole but the negative particle would fall into the hole.
Around a black hole is an almost imperceptable microsopic glow, positve mass particles fly off from it, behaving just like heat.
Why hair? All holes have a degree of fuzzle aroung the edge.