Our Universe Could Be Hiding in a Black Hole, Scientists Say

Bright Side

Here’s a mind-blowing thought: what if our entire universe is actually inside a black hole? Some scientists think it’s possible, and the idea is wild. They say the Big Bang might have been the result of a black hole forming in a larger universe outside ours. Inside that black hole, the laws of physics stretched and warped to create everything we know—stars, planets, even us! It’s like a cosmic Russian doll, with universes inside universes. If this theory is true, it could explain some of the biggest mysteries about how our universe works.   Credit: CC BY 4.0 https://creativecommons.org/licenses/by/4.0/:  Earth: by SebastianSosnowski, https://skfb.ly/6yuSN Solar System animation: by Samer_Arab_S5, https://skfb.ly/oKOqS Horizons & Ergospheres: by Yukterez, https://commons.wikimedia.org/wiki/File:Kerr_Newman_De_Sitter_(KNdS)_Horizons_%26_Ergospheres.gif NASA Goddard / YouTube Animation is created by Bright Side.  ---------------------------------------------------------------------------------------- Music from TheSoul Sound: https://thesoul-sound.com/   Check our Bright Side podcast on Spotify and leave a positive review! https://open.spotify.com/show/0hUkPxD34jRLrMrJux4VxV   Subscribe to Bright Side: https://goo.gl/rQTJZz ---------------------------------------------------------------------------------------- Our Social Media: Facebook: https://www.facebook.com/brightside Instagram: https://www.instagram.com/brightside.official TikTok: https://www.tiktok.com/@brightside.official?lang=en Telegram: https://t.me/bright_side_official   Stock materials (photos, footages and other): https://www.depositphotos.com https://www.shutterstock.com https://www.eastnews.ru ----------------------------------------------------------------------------------------  For more videos and articles visit: http://www.brightside.me  ---------------------------------------------------------------------------------------- This video is made for entertainment purposes. We do not make any warranties about the completeness, safety and reliability. Any action you take upon the information in this video is strictly at your own risk, and we will not be liable for any damages or losses. It is the viewer's responsibility to use judgement, care and precaution if you plan to replicate.

Transcript

00:00Scientists have a wild theory.

00:03What if our entire universe is actually inside a black hole?

00:08This is called the black hole cosmology.

00:10Some scientists have the idea that our observable universe, and everything we see around us,

00:16might be tucked inside a black hole, which exists inside another parent universe or even

00:21multiverse.

00:22And then this multiverse could be part of a bigger one, and so on.

00:26Kind of like a stacking doll.

00:28Sounds like pure science fiction, but this is based on some curious facts.

00:33When scientists create the timeline of our world, they say that everything started from

00:38a singularity.

00:39If you kept squeezing a giant ball smaller and smaller, at some point, it would get super

00:44dense before it crushed.

00:46Well, it's hard to imagine, but in space, it's possible to squeeze a crazy amount

00:51of mass into a teeny tiny point.

00:54This point is called a singularity.

00:56The matter gets crushed into an infinitely small space less than an atom, and it holds

01:01all the same mass of everything, while taking basically no volume.

01:07Inside this singularity point, things get so intense that the normal rules of physics

01:12just stop working.

01:14Everything we know – time, space, matter – breaks down and can't be applied anymore.

01:19Basically, what happens from now on is beyond our understanding.

01:24So scientists say that this was the starting point of our world.

01:27When the Big Bang happened, it's like this tiny dot with everything inside it expanded

01:33to everywhere.

01:34This started forming the universe as we know it.

01:37And here's the thing.

01:39Scientists assume that singularity also exists deep within black holes.

01:46General relativity says that a black hole is born when something really big, like a

01:51huge star, collapses under its own weight.

01:54Gravity gets stronger the bigger the mass is.

01:57With a mass of a huge star tens of times bigger than our Sun, this tiny point would have an

02:03unbelievable gravity.

02:04It's why it starts sucking in all the stuff around it and curves the fabric of space-time

02:10so much it looks like a hole in space.

02:13And this would be the center of a black hole.

02:15It's a dot where all these things fall into and get crushed into an infinitely dense

02:20point.

02:22So could our universe itself be just a little singularity dot inside a huge black hole inside

02:29of another universe?

02:30That would be wild.

02:32So it's not that easy to compress something so much that it literally warps space-time.

02:37You'd need to squeeze it like crazy.

02:40If you wanted to make a small black hole like a human size, you'd need to shrink them

02:45down to the size of an atomic nucleus.

02:48If you want a black hole the size of a chickpea, you'd have to compress our entire planet

02:52to that.

02:54But our universe is 99% empty space.

02:57There are trillions of miles of just nothingness between the stars.

03:02If you were to pack all the matter in the universe together, the result would be surprisingly

03:06small.

03:08Everything around us, including galaxies, stars, planets, and dust, would only fill

03:13about 1 billion cubic light-years.

03:15It would be a cube about 1,000 light-years on each side.

03:19For comparison, our Milky Way alone is 100,000 light-years in size.

03:24That's how sparse the universe is.

03:27But at this density, it would also be very, very massive.

03:31The resulting mass would likely collapse into a black hole.

03:35And here's the wildest part.

03:37The resulting black hole would be roughly the same size as the universe itself.

03:41It would also have the same mass and energy.

03:44As well as the same average density.

03:47The size, or radius, of the black hole grows together with its mass.

03:52The more stuff it eats, the bigger it is.

03:54But the density works the other way around.

03:57The black hole gets less dense as it grows.

04:00For a size that big of our entire world, it would be pretty sparse as well.

04:05And it's not the only coincidence.

04:08We have this thing called the Hubble radius, also known as the cosmological event horizon.

04:14If we imagine our observable universe as a giant bubble, then think of its edge like

04:19the farthest part of the universe we can see.

04:22When you stand in a field and look around, trying to see as far as you can, your eyes

04:27will draw a circle.

04:28This is like that.

04:30There might be more beyond that point, but we'll never know.

04:34On this horizon, the light from distant parts of the universe will never reach us.

04:39That's because light travels at a certain speed, and the space between us and those

04:43regions is expanding too quickly.

04:45It's like running towards something while super strong winds try to blow you away.

04:51Until we stay on Earth, we're cut off from those far-off corners forever.

04:56The black holes have something eerily similar, called an event horizon, or the Schwarzschild

05:01radius.

05:02This is the point of no return.

05:04This is the imaginary line that's often depicted as a light contour around the black

05:08holes.

05:10Anything crossing an event horizon, falling inside, is lost forever.

05:14No light, no matter, no information can escape from there.

05:19Black holes' gravity is way too strong, so they're perfect space vacuum cleaners.

05:24And as we mentioned before, if we create a black hole the size of the universe, they

05:29would have the same mass and the same event horizon radius.

05:34Now while some scientists think this could just be random coincidences, others believe

05:39it's a clue that our universe might actually be inside a black hole.

05:44The theory also suggests that our universe might not be the only one.

05:49It could exist in one of many black holes, scattered throughout a large multiverse.

05:54In this crazy model, each one of them, both in our world and our parent world, could lead

05:59to its own universe, with its own set of physical laws and structures.

06:04Now that would be some weird chain.

06:06There's this theory that says that universes could be born inside of black holes, sort

06:11of.

06:12It's called the Einstein-Carton theory.

06:15This idea talks about singularity as well, but in a different way.

06:19It says that, instead of collapsing into an infinitely dense dot, the matter might create

06:25a wormhole.

06:26This is like a tunnel through space and time.

06:29This wormhole, also known as an Einstein-Rosen bridge, could connect two different places

06:35of our universe.

06:36In that case, one side of the tunnel is the black hole, and on the other side, there would

06:41be a whole new universe forming.

06:43So it could work like a teleport.

06:46As soon as you pass the event horizon, you travel to the new world.

06:50But in that case, there should be an exit.

06:53Some scientists made it up and called it a white hole.

06:56It doesn't literally exist, not as far as we know, but it could be possible somewhere

07:02on the other side.

07:04It would serve as an exit of a wormhole, an area where matter is always ejected instead

07:09of pulled in.

07:10So it's like, you can't throw anything in there, it would get expelled immediately.

07:14That's all purely hypothetical, of course.

07:18All this stuff fits well into the concept of the Big Bounce.

07:22This idea says that, instead of our universe beginning with a singular Big Bang, it bounced

07:28from a previous state of collapse.

07:30Remember the squeezed ball analogy?

07:32Well, maybe there used to be another universe ball that got super-compressed to a minimum

07:38size before rebounding and expanding again.

07:41So instead of a universe born from nothing, we might live in one that's a cosmic recycling

07:47of another.

07:48There's also another version of this theory, sometimes called shockwave cosmology.

07:54The idea says that the Big Bang could've been caused by a boom inside a black hole.

07:59And this could create the expanding universe we see today.

08:03As the universe expands and the matter density decreases, the black hole would eventually

08:08transform into a white hole, the reverse of a black hole, where matter is expelled instead

08:13of pulled in.

08:15But even though we have all these interesting connections, they're not evidence.

08:20There are no experiments or observations that could prove or disprove these wild theories.

08:26So they all remain speculation for now.

08:29But at least it's fun to speculate.

08:35That's it for today!

08:36So hey, if you pacified your curiosity, then give the video a like and share it with your

08:41friends!

08:42And if you want more, just click on these videos and stay on the Bright Side!

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