Brian Greene - Did The Universe Emerge Inside a Black Hole?

Brian Greene - Did The Universe Emerge Inside a Black Hole?

The big bang theory explains the beginning of our universe. But could the entirety of our universe be inside a black hole?
Theoretical physicist Brian Greene explains this bizarre hypothesis in cosmology.

The idea that our universe may be entirely contained within a black hole is a mind-bending concept that has been explored by physicists for decades.

This hypothesis draws upon both general relativity and quantum mechanics, and could provide answers to some of the most perplexing questions in cosmology, such as the origin of the universe and the source of dark energy.

But, are there any observable effects that could indicate that our universe is inside of a black hole?

Virtually all cosmologists and theoretical physicists endorse the idea that the universe emerged during a single moment some 13.8 billion years ago.

That, in a nutshell, is the Big Bang theory. Evidence supporting the idea is extensive and convincing.

However, a few profound questions about dark matter, dark energy, and cosmic expansion have some astronomers rethinking what we know about the early universe.

Some scientists have revisited a decades old idea that our observable universe right now might exist on the interior of an enormous black hole.

That could potentially explain the origin of dark matter and dark energy, as torsion, a property of spacetime caused by the black hole, could be the source.

According to Brian Greene, the possibility of our universe being inside a black hole is an interesting puzzle that has been explored by scientists for many years.
However this idea remains only a hypothesis and currently we have no ways to test it.

#bigbang #space #science

[RLomoterenge]

As a kid in the 90’s, when I first heard about black holes, I always thought that it sounded like a reverse big bang. I always thought nobody talked about the possibility because I was wrong since it seemed too intuitive and these matters tend to be unintuitive

[Wreckz_Tea]

Thanks for giving me an idea for my next middle school science project. Pressing random objects from spectators into a black hole. I feel like it's going to be a pretty unique experience for everyone involved. They came for baking soda volcanoes and foam solar systems dangling from yarn,
But they stayed due to the event horizon.

I feel like it will really draw a crowd

[BentoDeSago]

Finally, something I thought decades ago: black holes are creating universes on the other side, with new laws of physics, new constants, etc. And as our universes is expanding, black holes also grow and are expanding. So our big bang was the start of a black holes that keeps on growing.

[subhanusaxena]

I’m curious, how do you get permission to just take Brian Greene’s other clips and use them or does using the voice track only allow you to circumvent copyright? Or do they get compensated for your views? Thank you for clarifying

[blackchallis]

I always thought that a blackhole punches into another universe which creates a whitehole which then populates that universe with matter

[Grumpy_Hobbit]

Been thinking about this kind of thing since the early 80's and first started betting taught physics. I always wondered if the event horizon to a black hole is also the big bang to a universe inside. You can never get out or in but each is a distinct universe.

Also, if the event horizon was the same as the big bang just from a different perspective then everything being red shifted might make sense as everything is expanding inwards from the edge which is everywhere...the universe is not expanding out but in.

[wolf]

Ok, I have a crazy idea (which isn't anymore ludicrous than dark matter or dark energy), maybe what we think is a big bang is actually a black hole creating supernova. Maybe what we see as an expanding universe is everything heading towards the singularity...from our minute perspective, it appears to be expansion because of properties of the interior of a black hole.

[Jellooman]

Could this also explain the young age of our own universe as compared to its expected longevity.

[daltonpoole]

the black hole idea plainly explains the expansion of the universe
i think the issue with the theory as of now is that we want to assume we understand the nature of the inside of black hole when in reality we dont
another key thing i personally see as correlation is the unobservable and observable regions of our universe
black holes have this as well

[lynchxxx]

Do you create the footages by your own or take them from somewhere else??

[mategergohorvath]

Great video! Can anyone help me to find a video with Brian Greene please? Years ago, I remember watching a video, where he is presenting a simplified equation on a screen, than he show a more detailed version of it, than again and eventually you see the full, extremely complicated version of the equation. I can't find it and I would really appreciate it if someone could point me in the right direction. Many thanks!

[raphaelrossi]

If we are in a black hole, then our observation of an expanding observable universe might be the ongoing influx of space time from a higher dimensional universe where the singularity in the higher dimensional universe is feeding our expansion across the entirety of our universe. Somewhat akin to a reverse and symmetric holographic phenomenon. Now I just need to test that idea.

[wthomas]

I can imagine the big bang resulting from an incredibly massive black hole. Instead of evaporating away as Hawking radiation. Once in a while it might happen.

[salec]

One explanation of universe expansion could be that "empty" space is sort of matter, substance, which spontaneously generates more of itself, so that areas with lower density grow in size faster over time, apparently outgrowing denser parts of universe.

[AndrewWutke]

in the centre of the low density black hole the gravity acceleration is zero like in the centre of any rigid sphere. But what keeps all matter not to rush towards the centre and collapse?

[PlanetXMysteries-pjnm]

very impressed with this video. I have always been interested in astronomy and physics. It was things like this that drove me to enter those professions. Thank you for feeding my insatiable curiosity about the universe and the wonders that we discove

[AntiGroup]

What if every black hole is an access, step up or step down to a new layer of reality, an ascent or descent, an access to new functionings of matter and consciousness together, through which nature itself evolves.

[davidruzicka]

The problem with this idea is that it doesn't take into account an object passing through the intense area of Hawking radiation just outside the event horizon. That radiation would vaporize matter entering the event horizon.

[abyssoftus]

The Schwarzschild Radius of a body with the mass of our universe (1.5e53 kg) is 23.548 ly, the current size of the observable universe is stated by current metrics is 46.508 ly, a factor of 1.975 of the Schwarzschild Radius. Could this difference be due to gravitational time dilation and length contraction?

[fredturk]

I suggest what does not add up is the increasing gravitational force as you get near the singularity. As far as we can tell our universe is isotropic and homogeneous. If there was a distortion in the dark energy/repulsive gravity surely we would see anisotropies in the CMB and distribution of galaxies.
From my perspective falling into a black hole just looks like accelerating faster and faster and getting pulled apart by differential gravitational forces. These forces should only act “down” so if our universe is expanding faster in all direction how does that work if we are inside the horizon of a huge black hole?