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What If All The Black Holes In The Universe Collided?


What If All The Black Holes In The Universe Collided?

What If All The Black Holes In The Universe Collided?
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Black Holes… These monstrous and seemingly voids of black space suck in everything that gets too close to them; space dust, asteroids, planets, and even entire stars. The nearest one is 1,600 light-years from us. And in the region of the Universe visible from the Earth, there are perhaps 100 billion galaxies. Each one has around 100 million stellar-mass black holes in the center, ready to devour anything that gets close enough to its event horizon. But what would happen if all the black holes in the universe collided? Keep watching to find out.

There are so many black holes in the universe that it is impossible to count them, and there are even more we have not discovered.
If all of the known black holes were to collide together, it would be the end of the universe as we know it. Some of these stellar giants would be so massive that they would easily swallow smaller ones, and become even larger. And if these black holes were like ours and the ones inside the Andromeda galaxy, then you could imagine the incredible cosmic cataclysm if they all collided at once, perhaps creating a black hole so massive that it would suck in the entire universe. Entire stars would be stripped and sucked inside, planets ripped apart, collisions of planets and stars, those star collisions possibly creating more black holes. It would be a chain of cosmic destruction.

What Happens When Black Holes Collide?

Black holes are one of the heaviest and most powerful objects in the universe. DCODE what happens when two ultra-dense black holes collide into each other at near lightspeed.

#DCODE, #HowTheUniverseWorks, #BlackHoles

What If All Black Holes Closed? | Unveiled

Black holes are one of the greatest mysteries in the universe. Massive structures that are both wildly destructive and crucial to how the universe works. But what would happen if they all disappeared? In this video, Unveiled finds out how whole galaxies would change if all the black holes suddenly closed.

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What Happens When Two Supermassive Black Holes Collide?

TON 618 is a very distant quasar located 10 Billion light years away. At the center of TON 618 there is a ultra-massive Black Hole with mass 66 billion times of the Sun.

26,000 light-years away from us at the heart of our Milky Way galaxy there is a Black Hole called Sagittarius A*. It’s diameter is 44 million kilometres and mass 4 million times of the Sun. So, What will happen if Sagittarius A* and TON 618 collides? Let's find out..

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Sound of Two Black Holes Colliding

This is the sound of two black holes colliding! It was caught by the LIGO (Laser Interferometer Gravitational-Wave Observatory) lab.
Cosmoknowledge doesn't own any rights to the sound in the video.

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2. Massachusetts Institute of Technology (MIT) (

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What Happens When Black Holes Collide? Black Hole Mergers Across The Universe

Black holes are the most impressive objects in the Universe, but when happens when they crash into each other is absolutely mind-bending. They distort space and time itself, sending ripples out into the Universe.

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The sign of a truly great scientific theory is by the outcomes it predicts when you run experiments or perform observations. And one of the greatest theories ever proposed was the concept of Relativity, described by Albert Einstein in the beginning of the 20th century.

In addition to helping us understand that light is the ultimate speed limit of the Universe, Einstein described gravity itself as a warping of spacetime.

He did more than just provide a bunch of elaborate new explanations for the Universe, he proposed a series of tests that could be done to find out if his theories were correct.

One test, for example, completely explained why Mercury’s orbit didn’t match the predictions made by Einstein. Other predictions could be tested with the scientific instruments of the day, like measuring time dilation with fast moving clocks.

Since gravity is actually a distortion of spacetime, Einstein predicted that massive objects moving through spacetime should generate ripples, like waves moving through the ocean.

Just by walking around, you leave a wake of gravitational waves that compress and expand space around you. However, these waves are incredibly tiny. Only the most energetic events in the entire Universe can produce waves we can detect.

It took over 100 years to finally be proven true, the direct detection of gravitational waves. In February, 2016, physicists with the Laser Interferometer Gravitational Wave Observatory, or LIGO announced the collision of two massive black holes more than a billion light-years away.

Any size of black hole can collide. Plain old stellar mass black holes or supermassive black holes. Same process, just on a completely different scale.

Let’s start with the stellar mass black holes. These, of course, form when a star with many times the mass of our Sun dies in a supernova. Just like regular stars, these massive stars can be in binary systems.

Imagine a stellar nebula where a pair of binary stars form. But unlike the Sun, each of these are monsters with many times the mass of the Sun, putting out thousands of times as much energy. The two stars will orbit one another for just a few million years, and then one will detonate as a supernova. Now you’ll have a massive star orbiting a black hole.

And then the second star explodes, and now you have two black holes orbiting around each other.

As the black holes zip around one another, they radiate gravitational waves which causes their orbit to decay. This is kind of mind-bending, actually. The black holes convert their momentum into gravitational waves.

As their angular momentum decreases, they spiral inward until they actually collide.

What should be one of the most energetic explosions in the known Universe is completely dark and silent, because nothing can escape a black hole. No radiation, no light, no particles, no screams, nothing. And if you mash two black holes together, you just get a more massive black hole.

The gravitational waves ripple out from this momentous collision like waves through the ocean, and it’s detectable across more than a billion light-years.

This is exactly what happened earlier this year with the announcement from LIGO. This sensitive instrument detected the gravitational waves generated when two black holes with 30 solar masses collided about 1.3 billion light-years away.

This wasn’t a one-time event either, they detected another collision with two other stellar mass black holes.

Regular stellar mass black holes aren’t the only ones that can collide. Supermassive black holes can collide too.

From what we can tell, there’s a supermassive black hole at the heart of pretty much every galaxy in the Universe. The one in the Milky Way is more than 4.1 million times the mass of the Sun, and the one at the heart of Andromeda is thought to be 110 to 230 million times the mass of the Sun.

In a few billion years, the Milky Way and Andromeda are going to collide, and begin the process of merging together. Unless the Milky Way’s black hole gets kicked off into deep space, the two black holes are going to end up orbiting one another.

When Black Holes Collide - AMNH SciCafe

When black holes collide, the energy of the event generates intense gravitational waves. These waves were predicted by Einstein in his theories, but scientists have only recently been able to detect them experimentally. In this SciCafe, Barnard College professor and astronomer Janna Levin shares her scientific research on the first recordings of a gravitational wave from the collision of two black holes 1.3 billion years ago.

#blackholes #SciCafe #AMNH #collisions #astronomy #space #universe

This lecture took place at the Museum on December 7, 2016. To learn about upcoming SciCafe events, visit To listen to the full lecture, download the podcast here:

The SciCafe series is proudly sponsored by Judy and Josh Weston.

This video and all media incorporated herein (including text, images, and audio) are the property of the American Museum of Natural History or its licensors, all rights reserved. The Museum has made this video available for your personal, educational use. You may not use this video, or any part of it, for commercial purposes, nor may you reproduce, distribute, publish, prepare derivative works from, or publicly display it without the prior written consent of the Museum.

© American Museum of Natural History, New York, NY

Three Black Holes Found on Collision Course

When galaxies collide, it means their supermassive black holes at the center of each galaxy collide as well. Recently, astronomers have detected a triple collision of galaxies, each containing a supermassive black hole. The titanic crash is happening in the SDSS J084905.51+111447.2 system.

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What happens when two black holes collide?

What happens when two black holes collide?
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If two black holes collide in space more than a billion lightyears away, do they make a sound? A team of scientists recently announced that, in fact, they do. Janna Levin, physicist and author of Black Hole Blues and Other Songs from Outer Space, joins Hari Sreenivasan to tell the story behind the breakthrough detection of gravitational waves.

“SciTech Now” is a new weekly, half-hour newsmagazine program focusing on “the nexus of new ideas.” Hosted by Hari Sreenivasan, anchor of “PBS NewsHour Weekend” and a senior correspondent for the nightly program, “SciTech Now” tackles topics including technology, scientific discovery and innovation.


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What if all the black holes in the universe collided?

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This video gives an answer to a mind blowing but an interesting question- 'What if all the black holes in the universe collided?'. It shows us about how the black holes have dominated over this vast universe and how they rip apart time and space. They are the true Titans of the cosmos. The most interesting fact we come to know is that black holes can move across the space. It is so astonishing and horrible because a black hole might be heading towards our planet right now and we know nothing!🙃🙃😲😲
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What If a Black Hole Entered Our Solar System?

Eight planets, hundreds of moons, hundreds of thousands of asteroids, and billions of comets orbiting our Sun make up our Solar System. And not once has a single black hole disturbed our planetary routine.

But what if it did? Would this uninvited guest swallow up everything on its way through the Solar System? Or would it just slightly disrupt it?

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Simulation Reveals Spiraling Supermassive Black Holes

A new model is bringing scientists a step closer to understanding the kinds of light signals produced when two supermassive black holes, which are millions to billions of times the mass of the Sun, spiral toward a collision. For the first time, a new computer simulation that fully incorporates the physical effects of Einstein's general theory of relativity shows that gas in such systems will glow predominantly in ultraviolet and X-ray light.

Just about every galaxy the size of our own Milky Way or larger contains a monster black hole at its center. Observations show galaxy mergers occur frequently in the universe, but so far no one has seen a merger of these giant black holes.

Scientists have detected merging stellar-mass black holes -- which range from around three to several dozen solar masses -- using the National Science Foundation's Laser Interferometer Gravitational-Wave Observatory (LIGO). Gravitational waves are space-time ripples traveling at the speed of light. They are created when massive orbiting objects like black holes and neutron stars spiral together and merge.

Supermassive mergers will be much more difficult to find than their stellar-mass cousins. One reason ground-based observatories can't detect gravitational waves from these events is because Earth itself is too noisy, shaking from seismic vibrations and gravitational changes from atmospheric disturbances. The detectors must be in space, like the Laser Interferometer Space Antenna (LISA) led by ESA (the European Space Agency) and planned for launch in the 2030s.

But supermassive binaries nearing collision may have one thing stellar-mass binaries lack -- a gas-rich environment. Scientists suspect the supernova explosion that creates a stellar black hole also blows away most of the surrounding gas. The black hole consumes what little remains so quickly there isn't much left to glow when the merger happens.

Supermassive binaries, on the other hand, result from galaxy mergers. Each supersized black hole brings along an entourage of gas and dust clouds, stars and planets. Scientists think a galaxy collision propels much of this material toward the central black holes, which consume it on a time scale similar to that needed for the binary to merge. As the black holes near, magnetic and gravitational forces heat the remaining gas, producing light astronomers should be able to see.

The new simulation shows three orbits of a pair of supermassive black holes only 40 orbits from merging. The models reveal the light emitted at this stage of the process may be dominated by UV light with some high-energy X-rays, similar to what's seen in any galaxy with a well-fed supermassive black hole.

Three regions of light-emitting gas glow as the black holes merge, all connected by streams of hot gas: a large ring encircling the entire system, called the circumbinary disk, and two smaller ones around each black hole, called mini disks. All these objects emit predominantly UV light. When gas flows into a mini disk at a high rate, the disk's UV light interacts with each black hole's corona, a region of high-energy subatomic particles above and below the disk. This interaction produces X-rays. When the accretion rate is lower, UV light dims relative to the X-rays.

Based on the simulation, the researchers expect X-rays emitted by a near-merger will be brighter and more variable than X-rays seen from single supermassive black holes. The pace of the changes links to both the orbital speed of gas located at the inner edge of the circumbinary disk as well as that of the merging black holes.

The simulation ran on the National Center for Supercomputing Applications' Blue Waters supercomputer at the University of Illinois at Urbana-Champaign. Modeling three orbits of the system took 46 days on 9,600 computing cores.

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Final Parsec Problem - The Paradox of Supermassive Black Holes

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What happens when two black hole collide?

►What happens when two black holes collide? Did you know that when two black holes merge into one they release enormous amount of energy?
According to the scientists, the result of collision of two super-massive black holes can have two outcomes.
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What if UY Scuti Hits A Black Hole?

UY Scuti is the biggest star in our entire known universe. It's located 48 quadrillion kilometers away from our planet near the center of milky way galaxy.

What will happen if the largest star in space UY Scuti, hits a medium size black hole. How this will end let's find out.

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What If the Milky Way and Andromeda Galaxies Collided?

This galactic collision might be more impactful than you think.

See that bright object in the sky? That’s Andromeda – the closest major galaxy to our Milky Way and the most distant thing you can see with the naked eye. And… it’s racing toward us at a rate of 110 km per second (68 miles per second). Eventually, 4 billion years from now, Andromeda will merge our Milky Way in a huge galactic collision.

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Scientists Just Detected Two Supermassive Black Holes on a Collision Course

Scientists just discovered two supermassive black holes, each with a mass of more than 800 million suns. And they're on a collision course with each other.
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Supermassive black holes are…huge. The Milky Way’s own supermassive black hole, Sagittarius A*, is approximately 4 million times the mass of our sun. And the black holes scientists just discovered are way, way larger.

It’s the first time such massive black holes have been spotted this close together (approximately 1,400 light years apart), and it could help scientists detect a hum of gravitational background noise.

As the two supermassive black holes draw closer together in a death spiral, the black holes will begin sending gravitational waves rippling through spacetime. Those cosmic ripples will join the as-yet-undetected background noise of gravitational waves from other supermassive black holes.

This historical collision will produce some waves more than 1 million times louder than those detected by LIGO (Laser Interferometer Gravitational-Wave Observatory).

Detecting the gravitational wave background will help resolve some of the biggest unknowns in astronomy, such as how often galaxies merge and whether supermassive black hole pairs merge at all or become stuck in a near-endless waltz around one another.

Learn more about this potentially monumental moment on this episode of Elements.

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We FINALLY Know What a Black Hole Looks Like

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Princeton scientists spot two supermassive black holes on collision course with each other

Astronomers have discovered a distant pair of titanic black holes on a collision course. Each black hole’s mass is more than 800 million times that of our sun. As the two gradually draw closer together in a death spiral, they will begin sending gravitational waves rippling through space-time.

Gravitational Waves Detected 100 Years After Einstein's Prediction

Physicists have concluded that the detected gravitational waves were produced during the final fraction of a second of the merger of two black holes to produce a single, more massive spinning black hole. This collision of two black holes had been predicted but never observed.

Supermassive Black Hole Discovery Could Help Answer The Final Parsec Problem

Once supermassive black holes get close enough to each other, they stop swapping gas and stars and stealing each other’s energy and everything slows right down. The final parsec problem theory suggests that all black hole binaries will stall out at around a parsec apart (3.2 light years) and time will stretch out into as-good-as-infinity.


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Seeker explains every aspect of our world through a lens of science, inspiring a new generation of curious minds who want to know how today’s discoveries in science, math, engineering and technology are impacting our lives, and shaping our future. Our stories parse meaning from the noise in a world of rapidly changing information.

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Two Black Holes Merge into One

A computer simulation shows the collision of two black holes, a tremendously powerful event detected for the first time ever by the Laser Interferometer Gravitational-Wave Observatory, or LIGO. LIGO detected gravitational waves, or ripples in space and time generated as the black holes spiraled in toward each other, collided, and merged. This simulation shows how the merger would appear to our eyes if we could somehow travel in a spaceship for a closer look. It was created by solving equations from Albert Einstein's general theory of relativity using the LIGO data.

The two merging black holes are each roughly 30 times the mass of the sun, with one slightly larger than the other. Time has been slowed down by a factor of about 100. The event took place 1.3 billion years ago.

The stars appear warped due to the incredibly strong gravity of the black holes. The black holes warp space and time, and this causes light from the stars to curve around the black holes in a process called gravitational lensing. The ring around the black holes, known as an Einstein ring, arises from the light of all the stars in a small region behind the holes, where gravitational lensing has smeared their images into a ring.

The gravitational waves themselves would not be seen by a human near the black holes and so do not show in this video, with one important exception. The gravitational waves that are traveling outward toward the small region behind the black holes disturb that region’s stellar images in the Einstein ring, causing them to slosh around, even long after the collision. The gravitational waves traveling in other directions cause weaker, and shorter-lived sloshing, everywhere outside the ring.

This simulation was created by the multi-university SXS (Simulating eXtreme Spacetimes) project. For more information, visit

Image credit: SXS

How Our Universe Will End: 'The Black Holes Will Eat Up Everything'

Robbert Dijkgraaf is a theoretical physicist and Leon Levy Professor at the Institute for Advanced Study in Princeton. He is also the co-author of The Usefulness of Useless Knowledge. In this video, he explains how our universe will meet its death.

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Following is the transcript of the video:

The black holes will eat up everything else in the universe.

I'm Robbert Dijkgraaf. I'm the Director and Leon Levy Professor at the Institute for Advanced Study in Princeton, and I'm a theoretical physicist.

I think the greatest discovery from Einstein’s theory is that the universe is expanding. But we learned something even more dramatic in recent years.

We learned that the universe isn’t only expanding, but there’s like a force inside empty space that helps to push the universe apart. It actually is accelerating the expansion of the universe, and this has really dramatic consequences. It will mean that the distant part of the universe will start moving away so fast at a point, that it’ll go faster than the speed of light.

That is to say, we’ll never be able to see them. So, what will happen to our part of the universe is that all the neighboring galaxies will slowly fade away. And we are left only with our galaxy and perhaps a few others, and that’s it.

We will be kind of living in an island universe. So, when the galaxy is left alone in this kind of empty universe, the stars will go out one by one because they will burn their fuel. And if all the stars are done burning their fuel, the only force that’s left is the force of gravity.

And it will slowly pull them in, and the black holes will eat up everything else in the universe, and this will be it. It’s a very desolate future for the universe. And I think that’s why many physicists were very hesitant to believe that this is actually the true future history of the universe. But it turns out, that the experiments are all pointing in that direction.



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