Event horizon theory

[GoSlash27]

I'm hoping that somebody who's more familiar with black holes can help me with this:

Wouldn't the process of falling into a black hole make the universe appear exactly as it does to us now?

If not, what would be the difference?

3 things that I can point to that I admittedly only have a fuzzy understanding of:

#1 The red shift problem

If you've crossed an event horizon, everything will appear to be moving away from you at C, which is what we observe. Couldn't this be explained by gravitational red shift rather than the universe having been initiated from a singularity?

#2 The dark energy problem

If you've crossed an event horizon, time will slow from your perspective, making it appear that everything's gradually *accelerating* away from you. We have observed this and attributed it to "dark energy". Could it not simply be gravitational time dilation?

#3 The cosmological horizon

If you've crossed an event horizon, you will see everything that has ever crossed it and everything that ever will cross it, but you will not see anything else. Could this explain the "Hubble horizon"?

If we had not fallen into a black hole, how would we know for sure? Or the converse for that matter.

Thanks,

-Slashy

[K^2]

There is, indeed, a horizon around an observer falling into a black hole, and it does enlarge as you fall in, apparently. (See: Schwarzschild Bubble.) I'm not sure about the other claims, but it's an interesting idea. I'll have to run some numbers.

[Whirligig Girl]

K^2 is the pioneer of being right on the internet.

I did a whole day of black hole philosophical thinking using what I know about black holes and only basic laws of math, and I came to the concusion that you would approach the black hole and see the universe end before your eyes, and as you cross the event horizon (assuming a supermassive one so you don't get torn apart), you cross the speed of light barrier and then you're travelling backwards in time from the death of the black hole until you're a decent way down, where if you had a telescope, you'd see the past unfold at mostly normal speed, maybe even be able to see yourself moving away from the event horizon.

None of this aided with any math more complex than a 9th grade U.S. education. I think I heard of a novel that predicted some of the same stuff, but I can't find it. Take this with a grain of salt. Just something to think about.

Edited January 31, 2015 by GregroxMun

[problemecium]

I do recall reading somewhere that as you cross the event horizon, the black void rises up to eye level and then past it as you go in, reducing your field of vision to a shrinking circle rather like the end of a Looney Tunes cartoon. However, this circle will blue-shift (or maybe it was red-shift... I don't remember for sure) until you can't see normally anyway. Eventually the radiation reaching you will be far outside the "normal" electromagnetic spectrum so that even with sophisticated equipment you couldn't discern anything useful.

So it's my guess that if you're suggesting that the universe might be inside a huge black hole, then when we look out into deep space there'd be a certain direction in which huge amounts of extremely energetic cosmic rays would be pelting us, and probably at an intensity that would have destroyed all Earthly life to begin with.