Quote:
Originally Posted by xelasnave
So although it is easy to say there is no problem I think there is ,,, simply because of the properties given to a black hole... nothing can escape and if light can not escape I think it must raise the question ..how then does the black hole communicate its message of gravity... or how does it bend space time.
alex  |
Here's the shocking news Alex.
Blacks holes aren't black outside the event horizon. An observer outside the horizon will never see an object (photon, rocket, astronaut) disappear into a black hole.
In most cases Newtonian physics is a good approximation for GR, but black holes is not one of them
.
If a probe is released from rest and allowed to fall into a black hole, Newtonian physics will predict the probe will reach a maximum velocity at the event horizon before disappearing across the horizon. This is from the observer's frame of reference outside the event horizon. It's a common and incorrect way of visualizing the behaviour of particles near black holes.
GR predicts a totally different scenario. To the observer the probe will reach a maximum velocity at 3 times the radius of the event horizon. Assuming the probe is not destroyed by tidal forces, it will then slow down and come to a grinding halt at the event horizon.
This is tied in with gravitational redshift. An object at the event horizon is literally frozen in time. The information is still there as it hasn't crossed the horizon and never will.
From the probes frame of reference it will pass through the event horizon. What is beyond the event horizon is pure speculation. The mathematics of GR inside the event horizon is very strange and scientists have struggled to interpret the mathematics.
Regards
Steven