Do Black Holes Really Contain a Singularity? (English Subtitles)

A singularity is a point in space where there is a mass with infinite density. This would lead to a spacetime with an infinite curvature. When scientists talk about black hole singularities, they are talking about the errors that appear in our current theories and not about objects that actually exist.


#blackhole #Singularity #Infinity

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[skypixel]

I agree that singularities are a result of the inability to describe what's inside a black hole, but could it be possible that "singularities" in black holes aren't infinitely dense but just simply pass the threshold in order to overcome the speed of light?

[saif]

Maybe a black hole is just a large neutron star who's gravity is strong enough to stop the escape of light.

[JJJJ-hebz]

If there’s no singularity that what creates the event horizon and allow massive stars to orbit it. There has to be something extremely heavy at the center to create the affects. The image of the black hole does prove it.

[bobbymkd]

Singularity is a hole in the knowledge!

[hlalakar]

No scientist should have ever described the center of a black hole as "infinitely dense." This is based on the fact that density is mass divided by volume. Our current models indicate that the center of a black hole has finite mass contained in zero volume. In other words, x/0. The problem is that x/0 does not equal infinity. It has never been defined as equaling infinity. x/0 is undefined, so the density of a singularity should always be described as undefined.

[eduardoassato]

My thought, as somebody who knows little about physics:

Fact 1: When something is near a blackhole, it experience time faster. One second experienced there may mean years passed outside. Right?

Fact 2: blackholes have a finite life span due to hawking radiation. It's life span depends on its size, but the smaller the black hole is, the faster it evaporates.

Conclusion: Nothing falling to the center of the blackhole has ever reached its center. Because when you get closer and closer, time outside progresses faster and faster. For an observer on the outside, it would mean that the falling object is frozen in time. From the perspective of the object, it would also not reach the center because the blackhole would evaporate before it could reach the, in theory, infinity density(and so, infinite time dilation) singularity, because millions of years would pass, giving time for the blackhole to evaporate.

I dont know how this translates to actual physics and im not sure it makes any sense either. Probably not.
There is no center. The center of the blackhole is a jump to the far future when it evaporates!

[helpforphysicists]

It is simple at a black hole time slows down and space (actualy time) needs time to curve (change). Gravitational waves prove that time is needed.

[aznstride]

What do you mean by why a guitar string would vibrate infinitely?

Doesn’t the vibration dissipate? I don’t quite understand the analogy

[ortherner]

I thought a singularity was plank length, not literally nothing, and just had a Extremely high Density, not Infinite.

[bottomtext]

Remember it is called a singularity only because we have no idea what's going on other 5han that's where all the mass went

[omsingharjit]

Then why it is not believed that there might be Neutron, quark or quark star shining inside the blackhole ?

[damian]

I think that instead of a singularity, a black hole is a portal to another place that looks like any other 3 dimensional realm. All of these stars, planets, and cosmic dust contribute to the giant mass which we perceive to be a small finite volume from our perspective

[damianayre]

Is there a formula for calculating the terminal velocity of a black hole ? Like if an object is slowly drifting in space and it gets close enough to a black hole that the gravity starts to pull it towards the black hole. I would think that the mass of the black hole determines how fast the object would be going when it hits the event horizon and maybe even how fast it would be going when it arrives at the singularity. Like a Cosmic Terminal Velocity.

Also, if an object is already moving directly towards a black hole when it gets close enough for the gravity to start pulling it in, how much would it speed up ? Seeing that gravity affects light and that light is already traveling at the Speed of Light, if the light is moving directly towards the singularity wouldn't it's velocity increase ? Especially if moving towards TON 618.

The Event Horizon is so far from the singularity and the point at which gravity starts to affect stuff is crazy far from the Event Horizon, objects and light moving directly towards the singularity would be speeding up for billions of years. If the gravity from the smaller black holes can affect light then surely the ultramassive ones can get the light to speed up a little and any amount of increase in velocity would achieve Faster Than Light.

[omsingharjit]

What if the core of black hole isn't subatomic then we still need to marge both theory ? If yes then why without any need ?

[christopherdougherty]

A black hole must be a seed for a new star.

[emilposselt]

Is it not known what amount of mass attraction it takes to stop light, and from that, caculate the size of the "singularity", from its horizon size? Example 100 million sun black hole, needs to be compressed to a certain size, to be able to excert that kind of gravity ??

[Whitehouse]

Black hole is a worm hole to another dimension. How do i know this? I ask Dr. Strange

[Ottbucket]

Wait... we can't explain the vast majority of mass in the universe.
So, I do not think that saying black holes are the last frontier is accurate.

[abhijeetcma]

Singularity means "don't know".

[NadimBayar]

It seems that even the understanding of what a black hole is can't escape a black hole! As if black holes absorb even our thoughts