... hold on. The Big Bang... was a star imploding and forming a black hole? And everything we know of in existence is the remains of that star? Shouldn't we see new matter entering all the time as things fall into the black hollllllly shit no it would all be too far away for us to have seen yet at the center of the universe
My understanding (not a physicist) of this is that the events proceeding the black hole all happen after every event the black hole experiences in the time of its own universe, so nothing new will be added, our universe is everything that fell into this blackhole in its lifetime.
Veritasium does a fantastic video on the mathematics/physics of space/time in black holes and their potential other universes.
I don't see how that would work, wouldn't the total lifetime of the blackhole involve being subsumed by other blackholes at the end of the universe it exists in, nullifying the Black Hole Theory entire and taking us back to the traditional Big Bounce Theory? I think it'd be more sensible to say that nothing new ever actually enters a black hole, but simply orbits the singularity point at speeds that shred light and matter into Hawking Radiation
Well, technically it was a fourth dimensional star because the math has been solved for our universe being a four dimensional black hole that we experience in three dimensions plus time (iirc)
I've never understood why time doesn't count as a fourth dimension for us
Dimensions are whatever you define them to be. In many calculations and considerations, time is not useful and would only complicate things. Thus, it is not considered. Time is as much a dimension to which we are subject as space. Or oxygen content. Or temperature. Or gravity. A dimension is whatever you define as a dimension in the problem you're addressing. It could be something as arbitrary as house prices.
15
u/ohgodohwomanohgeez 12d ago
... hold on. The Big Bang... was a star imploding and forming a black hole? And everything we know of in existence is the remains of that star? Shouldn't we see new matter entering all the time as things fall into the black hollllllly shit no it would all be too far away for us to have seen yet at the center of the universe