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Polchinski remains staunchly agnostic: “All bets are off; everything is open for discussion.”
That's if you're looking at someone else fall in, you see their time slow down and eventually the light from them gets so red-shifted you can no longer see it so you never see them cross the event horizon.
originally posted by: wildespace
Does a black hole even have an interior? To me, it seems that the gravitational time dilation below the event horizon will be infinite, and will stop the collapse into a singularity. At the event horizon, the physical reality simply stops.
originally posted by: darkorange
as I currently understand it, BH cannot evaporate. And its not a singularity per se. Space-time sill there. Black holes can merge and it says something.
In current state they lead to nowhere. But they will merge eventually into one massive BH which would explode into new universe, where space and time again would free itself from constrains releasing energy that kept it (space time) together once threshold is reached. Time arrow ensures it does not explode into same set of dimensions.
I meant does not fire back*
Theory says they will eventually, but it's not happening yet because the smallest black holes we know of are between 2-3 solar masses and a black hole would need to have less mass than the moon to evaporate under present conditions with the Cosmic Microwave Background at 2.7K. A black hole with the mass of the moon would absorb more radiation from the 2.7K CMB than it emits.
originally posted by: dragonridr
You lost me in fact black holes do evaporate.
To have a Hawking temperature larger than 2.7 K (and be able to evaporate), a black hole needs to have less mass than the Moon.