Teachers: You can’t divide by zero.
Nature: Hey guys, check this shit out.There are math models where dividing by zero makes sense. It’s just that those models don’t suit our world for now.
Now get this: some scientists think black holes might have hair.
But can you comb it all into the same direction?
yes because they have a bald spot due to high testosterone levels
Just FYI Superman has survived a black hole because the plot demanded it.
Keep in mind that all the cliches about black holes are about non-rotating black holes, which don’t exist in reality. In reality, a spinning black hole has a ring singularity, not a point, and behaves much weirder and even less intuitively than the hypothetical non-rotating counterpart as it smears out spacetime into taffy.
graph function singularities exist as physical features in our world
Do they, though…?
As I (mis?)understand it, as a massive star begins to collapse, getting denser and denser, the gravitational gradient gets steeper and steeper… and time (from the perspective of an outside observer) gets slower and slower… to the point that, from our point of view, the full collapse (or maybe even any collapse below the Schwarzschild radius?) hasn’t happened yet, and won’t happen until the extremely distant future, beyond the end of the universe…
So, in that sense, from the point of view of “our world”, no singularities (except possibly the big bang) would ever exist (yet), all of them being censored not only by event horizons, but by being shoved into the perpetually far future, beyond time itself…
And, speaking about event horizons, isn’t the whole “light isn’t fast enough to escape” concept a misinterpretation of sorts…? As I (again mis?)understand it, it’s not a matter of speed, but of geometry… The way space-time is twisted in such a gravitational gradient, once you get past the event horizon there are no longer any directions pointing towards the outside.
Which is another from of cosmic censorship (or a different effect or interpretation of the above), preventing anything inside the event horizon from causally interacting with the outside universe…
So, if these singularities are hidden beyond sight, causally, visually, and geometrically isolated from the rest of the universe, and perpetually shoved into the far future… can they really be said to exist in our world…?
(Of course there’s always the big bang, but we can’t really observe that one, only its effects, and it’s not necessarily exactly what the original post was talking about anyway…)
I think you explain it pretty well, but one thing to add. Due to the General Relativity and thus spacetime it is actually not directions that all point toward the singularity, but as soon as you cross the event horizon all of your future becomes the Singularity, not as a point in space, but a point in time
https://plato.stanford.edu/entries/spacetime-singularities/lightcone.html
This points at that, you would also need to be able to travel faster than light and that would make you time travel backwards in time
all of your future becomes the Singularity
There is some small burn-off Hawking radiation that escapes and gradually reduces the mass (and information content) of the black hole. Some of that would be you.
Fun fact: the big bang was not a singularity.
The fact that there’s some of them hurtling through space, unrestrained by the common movements of the rest of the galaxy, is really something to think about.
It’s in the same vein as gamma ray bursts. Could possibly cause problems, but space is so big, so heavily occupied by empty space, that the odds of ever encountering one vs just more empty space is almost infinity:1.
I mean, our planet is billions of years old and hasn’t encountered a single one yet, based on the fact it’s still comfortably in orbit around the sun.
Asteroids are far, far more concerning. Encountered a bunch of those already.
The CW flash can escape from a black hole
I remember reading this single page image from the flash where he was talking about how much he did in an atto second.
If that’d be true,nthe flash could create black holes at will or even by accident if he isn’t careful
Flash is such a hilariously overpowered hero, it’s awesome
GOOD point
He bathes in the black sun
thinking about the universe is already traumatizing
Where does it end? How are we floating? What if we fall? Where does it come from?
I don’t think about that a lot so it doesn’t give me anxiety
that’s the fun part, everything is always falling!
They really drive home the point that we can’t understand time
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