Re:Why Black Hole Interiors Grow Almost Forever
by pdonis on Saturday December 08, 2018 @03:10AM
(#18634376)
> spacetime inside the black hole flipped around, where space becomes temporal dimension and time becomes spatial dimension
No, this is not correct. The "flip" is in a particular choice of coordinates, not in spacetime itself.
> time is traversable in either direction while the singularity becomes an inevitable place in the "future"
It is true that the singularity is inevitably in the future--that's because inside the horizon, the future "time" direction points towards the singularity. But time is still only traversable into the future; you can't "reverse" your travel in time inside the horizon.
No, this is not correct. The "flip" is in a particular choice of coordinates, not in spacetime itself.
> time is traversable in either direction while the singularity becomes an inevitable place in the "future"
It is true that the singularity is inevitably in the future--that's because inside the horizon, the future "time" direction points towards the singularity. But time is still only traversable into the future; you can't "reverse" your travel in time inside the horizon.