Do you think it would be possible to pass informtion thru the event horizon.
Keep in mind, the event horizon is a region of space where gravity is so intence that the escape velocity (the speed somthing needs to be moving to escape) is greater than the speed of light. Nothing could escape once it passed that point of no return.
However! As black holes slowly dissolve they do reemit matter in the form of radiation. This is why you may have heard the expression "black holes are realy gray."
The physiscs of how they do this are tricky but I think it has something to do with random particles and antiparticles appearing on the border of the event horizon: One of the particles is lost while the other escapes.
Check out this recent news for more on the "information" that enters a black hole:
"If you jump into a black hole, your mass energy will be returned to our Universe, but in a mangled form, which contains information about what you were like, but in an unrecognisable state."
So the matter from a probe or anything else that enters a black hole will eventualy be reemitted in the form of radiation as the black hole disintrates over billions of years.
It is true that anything that enters a black hole will be hopelessly streach and obliterated (so there is no hope of a probe reemerging whole from inside a black hole). And it is also true that the energy/matter that falls into a black hole will be reemitted as radation.
So are black holes portals to other univereses? I would say, catagoricly no.
Do black holes emit "information" as they decay? (keep in mind physisists are using information in a very specific sense here) The anwswe is... sorta.