What's Inside a Black Hole?

What's inside a black hole? Here are three awesome theories.

Have questions, ask me:
twitter @gkestin

Host, Writer, Producer: Greg Kestin

Scientific Consultant: Samir Mathur

Editorial Input from: Julia Cort

Animation: Edgeworx

Animation and Editing: Greg Kestin

Special thanks: Entire NOVA team

From the producers of PBS NOVA © WGBH Educational Foundation

Funding provided by FQXi

Music provided by APM

[novapbs]

No matter what's inside a black hole, I'm keeping my distance! I'd rather not become "spaghettified, " thank you very much.

[fabiovonbrasche]

0:05 isn't it called EVENT horizon?

[yashwantht]

Hey, this is amazing. Is there any theory which says that blackholes could be a gateway to another universe in the Multiverse or hyperverse?
Jeezz!!, blackholes are horrifyingly awesome.

[johnbats]

What if there is another universe in them?

[BC-snim]

I think the key to understanding the universe lies within understanding more than 3 dimensions

[priyanshugaur]

Please do a video on BLACK HOLE INFORMATION PARADOX too

[abhinavgoel]

Visions of the past? Even two images overlapping each other become indistinguishable. No way you'll be able to distinguish a singular vision among with so much interference.

[musthe]

Everybody says that it's not possible to see directly or indirectly what is inside a Black Hole. But I think there is a mean : The Gravity has no mass and don't follow the space time curve. While observing ouside gravity disturbancies, we could deduce what is happening inside.

[lwocttk]

If a huge neutron star came near a black hole (and suppose the neutron star was more dense than the mini black hole) what would happen?

[nicholaslau]

If inside a black hole, you see a ton of light, wouldn't that light be bent and stretched so much you can't identify it as the past?
(assuming you knew what the past looked like), also the light rays would be travelling toward the centre, so technically it would never reach your eyes unless you are at the centre, or you are travelling at the speed of light alongside other fellow light rays and the result is a still image at you all travel together toward the centre. Also, isn't that black holes destroy information but conserve matter? Does seeing the past mean that there is still information?

[iMrtyx]

Have you ever thought about doing a podcast ? You could discuss some topic with another physicist for example and exchange ideas...

[aaerkxaiedrschtaufenbachaa]

Wait but no matter how or where u look at the black hole, it looks 2D even tho it's 3D, but what if I told u that it COULD POSSIBLY be a portal to an external dimension such as the 2nd or the 4th, but this could all depend on the black hole it self. Also if the first dimension is just length or in this case just a dot, wouldn't it be a smaller version of an INFINITE amount of dimensions since the 'dot' points in every dimension.

[WhatThePhysics]

Hey hey! Next week is going to be about quantum mechanics you see everyday, but don't even know it!

[jeffborders]

1:50 "everything is gravitationally attracted to the center." Nope you're dead wrong pal. Gravitational attraction is strongest at the surface of any body. That's why black hole surfaces are strong enough to require superluminosity to escape. Once below a measurable surface of a physical object, gravity linearly diminishes becoming ZERO at the center. Things are not gravitationally attracted to the center. Things are gravitationally drawn together. That's it. If you could miraculously hollow out a room in the exact center of ANY celestial body, you could theoretically float around inside the room just like you would in outer space.

[lalramdinsangaralte]

After watching this video, finally i must to fucus on astrophysics.

[jjt]

The more likely alternative is quantum loop theory. As far as I understand it, it says that there may be a wormhole at the center of a black hole, but the end of the wormhole doesn't point to another parallel universe, but to our own future universe. Thus, if you fall into a black hole, you will travel instantly to the very remote future, near the end of our universe. The only problem is, you won't make it, but your quarks will.

[Nexus-fudm]

I think there is a kind of thing that can turn you into every kind of matter in it

[pineapplesstudios]

I wanna keep my strings thank you very much. Selfish hole .-.

[Unconvinced]

There can be an entire universe packed into the singularity with new rules and destroyed building blocks.

[Weathernerd]

I doubt there is an infinitely dense point for 3 reasons 1) Nothing in nature is infinite, an infinite solution often means there is a problem with the equation 2) if the center of a black hole were infinitely dense its gravity would be infinitely strong which would stop time. Black holes form and dissipate over a period of time so time cannot be frozen, time might be greatly dilated a few seconds inside the black hole = a few billion years outside the black hole but time must keep moving. 3) the inside of a neutron star is a sea of quarks, can we really prove there isn't an even smaller particle? I suspect the center of a black hole is a small point of subatmoic particles and since its not infinitely dense gravity is not infinitely strong and there is no event horizon. The extreme gravity redshifts light so much that it looks like there is an event horizon but if you got really close with a really powerful telescope you might be able to see through the event horizon.