The discussion centers around the nature of black holes, particularly focusing on the concept of event horizons, their behavior when consuming matter, and the implications of their existence. Participants explore theoretical aspects, gravitational effects, and the limitations of current physics in fully describing black holes.
Participants express differing views on the nature of black holes, particularly regarding the event horizon and the implications of being inside it. There is no consensus on the extent to which current physics can describe black holes or the validity of certain claims about their behavior.
Limitations include the unresolved nature of physics near the singularity and the dependence on theoretical models to describe black holes. The discussion reflects ongoing uncertainties and assumptions about the behavior of black holes and their event horizons.
Well, you can't really prove anything in science, so that's not a big deal. Black holes actually work just fine with our physics all the way down to their heart. Classical theory predicts a spacetime singularity, while quantum gravity predicts something quite different (though no one is exactly sure what yet). In any case, the only part of the black hole we don't fully understand is that part within a Planck length (10^-43 m) of its center.
False. Nothing exceptional happens inside a black hole's event horizon (which is, I asssume, what you mean by being "inside" one), except that all worldlines terminate at the singularity. Once you're inside the event horizon, you can zoom around in your spaceship all you want, and everything will seem normal -- you just can't ever get back out of the event horizon. Once you run out of fuel, though, you're lunch.
We have no photographic evidence of any sort of black holes, since they are not detected photographically. They are detected via their gravitational interaction with nearby luminous objects.