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The interesting thing to me is that in theory we should be able to observe a very nearly frozen part of our universe near the event horizon of a black hole.
Originally posted by Astyanax
I wonder. A frozen universe is an unobservable universe, except from without. Unless you’re one of those people who believes in ‘multiverses’ (and usually, even then), such observation from outside is impossible or meaningless. So I would say that space could no more exist independent of time that time could do without space.
Originally posted by l_e_cox
I want to know that modern science is free for undue interference from outside parties before I start taking its work too seriously.
Originally posted by Arbitrageur
So it wasn't completely frozen in time, but that's because it was outside the event horizon. So this raises the question of what happens precisely AT the event horizon. Does time completely stop there? I don't know, but I'm not real fond of the singularity in a black hole either so I tend to think it's more likely to be a problem with our model and math than it is with nature. But if the model/math is right, then time indeed stops at the event horizon from our perspective as outside observers, right?
At least there's some speculation about experimental observations, but I don't know how much larger accelerators can get...the LHC is pretty large.
One of the difficulties of quantum gravity is that quantum gravitational effects are only expected to become apparent near the Planck scale, a scale far smaller in distance (equivalently, far larger in energy) than what is currently accessible at high energy particle accelerators. As a result, quantum gravity is a mainly theoretical enterprise, although there are speculations about how quantum gravity effects might be observed in existing experiments.
Auṃ – That supreme Brahman is infinite, and this conditioned Brahman is infinite. The infinite proceeds from infinite. If you subtract the infinite from the infinite, the infinite remains alone.
You've got the over-simplified theory, not the actual theory.
Why are sprial galaxies relatively flat, when gravity in theory attracts equally in every direction from the center of mass?
Over time (a very short time, as it turns out!) the inclined particles will lose their inclination or be destroyed, leaving a nice, flat ring system.
We see this disk-forming process, not only in planetary rings, but in many other astrophysical contexts, such as young solar systems and disks around black holes.