Is there vacuum at the Event Horizon of a Black Hole?

[avito009]

As all of us know that in a vacuum the particle antiparticle pairs or the virtual particles are created violating the law of conservation of energy.

So even near an Event Horizon of a Black Hole virtual particles are formed. One of the particles gets sucked into the black hole but the other remains emitting a radiation called Hawking Radiation.

So is there vacuum at the surface of the event horizon due to which particle antiparticle pairs are created?

 

[Doug Huffman]

Yes, but there are vacuums and there are vacuums. Ask what the mean free path might be near the horizon.