When photons cross a black holes event horizon we say it means they can never been seen again by anyone outside it.

Does a photon then:

A) Travel forever towards the center of the black hole, never quite reaching it.

B) Travel in a finite ammount of time towards the center and stays there for an infinite ammount of time.

C) Travel to the center and continue outwards for an infinite ammount of time never crossing the event horizon again.

Does it make a difference to an outside observer?

You will need to be more careful and state time as measured by who?

 

For a massive object you have the notion of proper time. As far as the object falling into the black hole is concerned, it takes a finite amount of time to hit the singularity. However, as viewed by an external observer far enough away the object is never seen to cross the event horizon.

 

The problem is that photons do not have a notion of proper time. We cannot make sense of what the photon 'sees'. Thus, you will need to be more careful with what you mean by time.

Edited August 22, 201510 yr by ajb