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What If Our Universe Collided With Another One?

  • What If Our Universe Collided With Another One?

    5:21

    This pretzel-shaped collection of galaxies is our Universe. And it's about to collide with another universe. It might be fascinating to watch, but we should probably be worried about what's going to happen when they crash. How would it change the physics of our Universe? Is there any chance that we would survive? What would the collision look like from Earth? And has it ever happened before?

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    What If is a mini-documentary web series that takes you on an epic journey through hypothetical worlds and possibilities. Join us on an imaginary adventure through time, space and chance while we (hopefully) boil down complex subjects in a fun and entertaining way.

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  • What If the Milky Way and Andromeda Galaxies Collided?

    3:40

    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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    About What If:
    Presented by INSH and Hashem al Ghaili

    What If asks some of the most provocative hypothetical questions in science — and then tries to answer them with the help of established scientific theory and the latest research.

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  • What If All Black Holes in the Universe Collided?

    10:39

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  • What If Two Black Holes Collided?

    5:08

    Black holes are the gravitational monsters of the Universe. They are so powerful that nothing, even light, can escape their grasp. One black hole is bad enough. But if you took two black holes and smashed them into each other, they'd be capable of changing the shape of space itself. How epic would that explosion be? And could it somehow reach the Earth?

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    What If is a mini-documentary web series that takes you on an epic journey through hypothetical worlds and possibilities. Join us on an imaginary adventure — grounded in scientific theory — through time, space and chance, as we ask what if some of the most fundamental aspects of our existence were different.

  • Another Universe May Have Bumped Into Ours and We Might Have Proof

    4:24

    The Cold Spot in the cosmic microwave background radiation has led astronomers to speculate the possibility of parallel universes.

    What Is Beyond The Universe? -
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    Universe Older Than Thought, New Map Reveals

    Astronomers first discovered the CMB by accident in 1964, and have been studying it ever since because of the precious clues about the universe's beginnings embedded in it.

    Our Universe Has 10-20 Times More Galaxies Than Thought

    A new headcount of galaxies in the observable universe turned up 10- to 20 times more galaxies than previous estimates, bringing the tally up to as many as 2 trillion, a new study shows.

    Multiverse: have astronomers found evidence of parallel universes?

    Each alternate universe carries its own different version of reality. There will be one where you wrote this column and I read it; one where the Guardian is an alt-right propaganda rag; even a really weird one in which Donald Trump uses twitter to spread nothing but amusing cat videos.

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  • What If We Could Open a Portal to a Parallel Universe?

    5:29

    What if there are other universes, just like ours? With an infinite number of Earths? With uncountable versions of you? And what if we don't have to look too far to find them? Maybe a mirror version of our reality is right here... Our Universe began when a small, but very hot singularity exploded in the Big Bang 13.7 billion years ago. But maybe it wasn't the only one to be born then.

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    Imagination will often carry us to worlds that never were. But without it, we go nowhere. — Carl Sagan

    What If is a mini-documentary web series that takes you on an epic journey through hypothetical worlds and possibilities. Join us on an imaginary adventure — grounded in scientific theory — through time, space and chance, as we ask what if some of the most fundamental aspects of our existence were different.
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  • What If a Magnetar Collided With a Black Hole?

    4:15

    In the center of our galaxy, the Milky Way, there is a supermassive black hole feeding on nearby stars. It's called Sagittarius A*. And if a giant gravitational monster slowly eating the galaxy isn't terrifying enough, there is another cosmic monstrosity lurking around it. Could they, one day, come a little too close and collapse on each other? What would be left of the Milky Way if they did? Would there be even a slight chance that the Earth could get out of that safely?

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  • What If All The Black Holes In The Universe Collided?

    5:58

    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 If The Universe Stopped Expanding?

    3:34

    What if all the galaxies, stars, planets – everything – stopped moving away from everything else?

    Would the Universe as it is just freeze?

    Or would it collapse into a single point, just like it was before the Big Bang?

    Would that be the end of everything?

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    About What If:
    An INSH original web series, presented by Hashem al Ghaili

    What If asks some of the most provocative hypothetical questions in science — and then tries to answer them with the help of established scientific theory and the latest research.

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  • What If All Stars Exploded at the Same Time?

    4:09

    For every galaxy that's visible from Earth, there are nine smaller ones that we can't see, even with all the technology we've developed. That's 90% of all space stuff in the observable universe that we're missing out on. We can't even see all the stars in the Milky Way. Our home galaxy is just too cluttered with gas, dust, smaller stars and, well, one supermassive black hole. All that makes it impossible to tell how many stars there really are out there. But whatever that number is, it sure has a lot of zeros in it.

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    Imagination will often carry us to worlds that never were. But without it, we go nowhere. — Carl Sagan

    What If is a mini-documentary web series that takes you on an epic journey through hypothetical worlds and possibilities. Join us on an imaginary adventure — grounded in scientific theory — through time, space and chance, as we ask what if some of the most fundamental aspects of our existence were different. Produced with love in Toronto by
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  • What If a Magnetar Entered Our Solar System?

    4:20

    This is the most powerful object in the Universe. The biggest spinning magnet to ever exist.
    It's the cosmic equivalent of a great white shark. But it wouldn't eat you. It would just turn all your atoms to dust... If you thought neutron stars were big and scary, well, you haven't heard of their more powerful stellar cousins yet. Like neutron stars, magnetars are leftovers from supernova explosions.

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    Imagination will often carry us to worlds that never were. But without it, we go nowhere. — Carl Sagan

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  • What If a White Hole and Black Hole Collided?

    4:59

    Black holes are one of the most devastating objects in space, sucking up everything around them. But there's another space phenomenon that's just as destructive, and it's known as a white hole. Now, what would happen if these two objects met in space and fought each other? How could something like this happen? Who would win? And what is a white hole anyway?

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  • What If Another Sun Entered Our Solar System?

    5:12

    With the vastness of the Universe, everything in it seems so spread out. But some objects are closer than you might realize. Every now and then, a random interstellar asteroid passes through the Oort cloud, the wall of icy debris at the very edge of our Solar System. But what if a rogue star unceremoniously rampaged right through the Oort cloud?

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  • What if Jupiter And Saturn Collided?

    2:44

    Jupiter is the fifth planet from the sun. It is the largest planet of solar system with a diameter of 139,820 kilometers. Saturn is the sixth planet from the sun and the second largest planet with a diameter of 116,460 kilometers. Both planets are massive gas giants which means they don't have any solid surface.

    As Jupiter and Saturn collides we will see the creation of a new system. Both plants will merge into each other forming a new and much bigger host planet. It may start fusion at the core of new planet becoming a low mass star.

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  • What If All the Planets Collided?

    10:52

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  • What If the Universe Isnt Flat But a Giant Loop?

    5:08

    If you got into a spaceship and traveled long enough and fast enough, could you eventually loop back to where you started? Assuming you don't accidentally collide with another planet or star, and that no black hole swallows you along the way.

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  • Milky Way Bumped Into Another Galaxy But Earth Survived

    10:07

    The Earth is our home and it feels like it has been here forever and will always be there. However, it's not so easy and safe in space, and it looks like the Milky Way is at risk!

    Astronomers believe that in 4.5 billion years, a powerful galactic collision will occur. The Milky Way galaxy, which is the home to our Solar System and the very planet we live on, will collide with the Andromeda Galaxy. The good news is that the collisions, and the potential appearance of a quasar, will have no effect on our planet! What's more, even the quasar's radiation won't manage to disturb the peace of the Solar System.

    Other videos you might like:
    A Mysterious Object Punched a Hole in the Milky Way, Scientists Are Confused

    Stephen Hawking’s 7 Predictions of Earth’s Demise in the Next 200 Years

    The Solar System Is Not Like You Think It Is


    TIMESTAMPS:
    The release of the most detailed map of the Milky Way 0:38
    A new galaxy was discovered 1:12
    The mystery of Antlia 2 2:43
    There was a collision 1 billion years ago 3:48
    The future collision 5:17
    The dramatic results of a collision 6:38
    Will it really happen? 7:38

    #spacefacts #brightside #milkyway

    Music by Epidemic Sound

    SUMMARY:
    -In 2018, the European Space Agency finally released the most detailed map of the Milky Way galaxy.
    -A new galaxy orbiting the Milky Way that was named Antlia 2 was discovered thanks to the powerful telescope.
    -A new study claimed that the very same Antlia 2 is responsible for bizarre ripples disturbing the hydrogen gas in the Milky Way's outer disc.
    -It seems that over time, the Milky Way has absorbed loads of the material Antlia 2 consists of when the two collided about 1 billion years ago.
    -There might be not one, but two galactic collisions; and the first is likely to happen around 2 billion years from now, when the Milky Way collides with the Large Magellanic Cloud.
    -All the constellations, as we know them, will disappear from the sky, but the potential appearance of a quasar, will have no effect on our planet.
    -The chances of several stars colliding during the galaxies' merge are really low because stars are located too far away from each other.

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  • What If the Universe Ended Tomorrow?

    4:17

    What if all the stars disappeared tomorrow, together with all the planets, solar systems and galaxies? What would be left of the Universe if it suddenly collapsed? What could make it restart its cosmic cycle all over again? And how exactly could the entire Universe break apart?

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    What If is a mini-documentary web series that takes you on an epic journey through hypothetical worlds and possibilities. Join us on an imaginary adventure through time, space and chance while we (hopefully) boil down complex subjects in a fun and entertaining way.

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  • What Happens When a White Hole and a Black Hole Collide?

    15:17

    In this video I show you the difference between a I white hole and a black hole, then I actually show you what a white hole and a black hole look like in real life. Then I actually show you what happens when I black hole and a white hole collide together!

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    My other video about white holes and worm holes more in depth

  • 5 Horrible Asteroids in Direction to Earth And Its Date Of Collision.

    10:01

    Asteroids, those dangerous objects capable of wiping out the entire civilizations, are found in millions in space.
    Most of them revolve around the solar system, mainly between the orbits of Mars and Jupiter.
    But the frightening thing is that according to different data collected by science, there are a number of asteroids that are approaching the earth and some of them even have a date for their collision with our planet.
    Get ready, because this time, we will review some asteroids that are in the direction of the earth and their possible date of collision.

    Before we start, we don't want to alarm you, as many asteroids have passed through the earth throughout history and have rarely posed a threat to the planet. Although some of the asteroids listed below have an impact date, this is not accurate, as many of them change their trajectory over the years.

    Knowing this, let's get started.

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  • Scientists Believe a Parallel Universe Exists

    10:29

    The theory of multiple or parallel universes is one that blurs the line between scientific reality and science fiction. It’s a pretty huge topic of debate in the scientific community, with big names on both sides. If you believe that multiple universes exist, then maybe you can feel a little better about having the great genius physicist Stephen Hawking in your camp! He had a pretty spectacular theory on multiple universes.

    This is the idea that everything you thought you ever knew – our planet, the solar system, our galaxy, all the other stars and galaxies out there as far as our fancy telescopes can see – it’s just one itsy bitsy piece of a really giant puzzle!

    TIMESTAMPS:
    What a “multiverse” really is 1:26
    There are infinite me’s and you’s each in their own universe ???? 2:25
    What these universes look like 3:17
    What would a parallel version of our world look like? 4:45
    How to prove that? 5:32
    How could you possibly travel to a different universe? 8:24

    #sciense #universe #brightside

    SUMMARY:
    - Up until recent years, scientists were sure there was only one universe that contained everything known to humankind – hence the whole “uni” thing.
    - This is now known as the Multiple Worlds theory. So how does it work? You can mostly visualize it like a flow chart that keeps branching off continuously.
    - Some believe these universes are like bubbles, totally unseen by each other because, well, we just don’t have that kind of technology! There’s also the model that shows universes looking kinda like sheets of paper stacked on top of each other.
    - So, what would a parallel version of our world look like? Well, some attributes of our universe may be different, while some are the same! For example, perhaps this parallel version of our planet has grass and trees and birds flying in the sky and whatnot.
    - Anyway, before we travel to these worlds, we have to know they’re actually real. Proving or disproving their existence is no easy task.
    - The idea is to blast a handful of subatomic particles through a 50-foot tunnel, past a really strong magnet, and into a wall at the end. If some of those particles come out as a mirror image of themselves on the other side, that means science has made a breakthrough of galactic proportions.
    - In theory, some scientists believe the Big Bang that started it all could’ve been two universes colliding and forming a new one!
    - How could you possibly travel to a different universe? Of course, we’re talking theoretical physics here, so there are plenty of theories! First off, there’s always wormholes!
    - And, well, there’s always Stephen Hawking’s theory of how you can travel to another universe: all you have to do is jump into a black hole!

    Music by Epidemic Sound

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  • What If Earth Was the Only Planet in the Solar System?

    5:22

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    Imagine never being able to dream of landing on Mars or traveling to Saturn.
    Not because it's impossible to get there, but because they didn't exist. Because Earth was the only planet in our solar system. What would the night sky look like? Where would Earth be located? And how would humanity evolve?

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  • Rogue Planet Collision | How the Universe Works

    2:51

    In November 2012, astronomers spotted a new planet 100 light years from Earth, but this giant planet does not orbit a star. There may be as many as 200 billion rogue planets in our galaxy - and one could be headed our way. | For more How the Universe Works, visit

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  • What If a Rogue Planet Entered Our Solar System

    3:43

    Scientists found a mysterious rogue planet roaming aimlessly outside our solar system. What if it came closer?

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  • What If a Massive Gravitational Wave Hit Earth?

    6:24

    1.3 billion years ago, two orbiting massive black holes, circling each other at 250 times a second, collided in a violent, universe-rippling explosion that sent waves of energy throughout the cosmos. In its wake, a new supermassive black hole formed over 60 times bigger than our Sun. Fast forward to September 2015, gravitational waves from this ancient cosmic event finally struck Earth. Luckily, the gravitational waves weakened over such a great distance. But what if we weren't so lucky? If a couple of black holes in our solar system collided, could we survive? What would happen to Earth if we got hit by massive gravitational waves? What causes these waves? How can we detect them?

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  • The Andromeda-Milky Way Collision | Space Time

    12:02

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    The Andromeda galaxy is heading straight toward our own Milky Way. The two galaxies will inevitably collide. Will that be the very last night sky our solar system witnesses?

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    Previous Episode:
    Scientists Have Detected the First Stars


    See that fuzzy blob on the sky? The one just left of the Milky Way center in the constellation of Andromeda. That’s M31 – the Andromeda galaxy. It’s two and a half million light years away and host to a trillion stars. It has a beautiful spiral structure spanning its gently rotating disk 220 thousand light years in diameter, and a central bulge that hides a giant black hole that contains the mass of well over a hundred million Suns. Andromeda is also racing towards our galaxy at 110 km/s.

    Written and Hosted by Matt O'Dowd
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  • The True Science of Parallel Universes

    4:56

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    Minute Physics provides an energetic and entertaining view of old and new problems in physics -- all in a minute!

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    Thanks to Nima Doroud and TED-Ed for contributions.

    Created by Henry Reich Created by Henry Reich

  • What Happens When Two Neutron Stars Collide?

    1:55

    When a star runs out of it's fuel either it dies in dark or explodes. Neutrons stars are formed as a result of that explosion called supernova.

    Neutron stars are mostly made up of Neutrons & & are one of the most densest objects in the universe. They are so dense that one teaspoon of neutron star material would weigh about 100 million tons

    Their radius is roughly 10-12 km, but still they are more massive than our sun.

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  • What Would A Parallel Universe Even Be Like?

    2:58

    Our universe might seem huge, but what if this isn't the only universe? Let's explore the idea of a multiverse.

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  • What If A Black Hole And White Hole Collided? | Unveiled

    6:52

    What if a black hole went head-to-head with its hypothetical opposite? In this video, Unveiled asks the extraordinary question: What if a black hole collided with a white hole? Causing cosmological chaos across all of space and time, this monumental event would shake the universe to its core... and could even kick-start a new reality altogether!

    This is Unveiled, giving you incredible answers to extraordinary questions!

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    #Space #Venus #AncientAliens #SETI #SolarSystem

  • Michio Kaku: Space Bubble Baths and the Free Universe | Big Think

    5:25

    Michio Kaku: Space Bubble Baths and the Free Universe
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    How can you create a universe from nothing? Well if you calculate the total matter of the universe it is positive. If you calculate the total energy of the universe it is negative because of gravity. Gravity has negative energy. When you add the two together what do you get? Zero, so it takes no energy to create a universe. Universes are for free. A universe is a free lunch.
    ----------------------------------------------------------------------------------
    MICHIO KAKU:

    Dr. Michio Kaku is the co-founder of string field theory, and is one of the most widely recognized scientists in the world today. He has written 4 New York Times Best Sellers, is the science correspondent for CBS This Morning and has hosted numerous science specials for BBC-TV, the Discovery/Science Channel. His radio show broadcasts to 100 radio stations every week. Dr. Kaku holds the Henry Semat Chair and Professorship in theoretical physics at the City College of New York (CUNY), where he has taught for over 25 years. He has also been a visiting professor at the Institute for Advanced Study as well as New York University (NYU).
    ----------------------------------------------------------------------------------
    TRANSCRIPT:

    Michio Kaku: We have found the Higgs boson. So then the next question is what's next? Well the Large Hadron Collider, this machine that is 27 miles in circumference, costing 10 billion dollars is big enough to create the next generation of particles. So the Higgs boson in some sense is the last hurrah for the old physics, the old physics of what is called the standard model, which gives us quarks and electrons. The new theory is going to take us into dark matter. Now we know dark matter exists. Dark matter is invisible, so if I held it in my hand you wouldn't see it. In fact, it would go right through my fingers, go right through the rock underneath my feet and go all the way to China. It would reverse direction and come back from China all the way here to New York City and go back and forth.

    So dark matter has gravitational attraction, but it is invisible and we are clueless as to what dark matter really is. The leading candidate for dark matter today is called the sparticle. The sparticle is the next octave of the string. Now look around you. Everything around you, we think, is nothing but the lowest vibration of a vibrating string, the lowest octave in some sense, but a string of course has higher octaves, higher notes. We think that dark matter could in fact be nothing but a higher vibration of the string. So we think that 23% of the universe, which is the dark matter's contribution to the universe, comes from a higher octave of the string. Now the standard model which we have ample verification of only represents four percent of the universe. So the universe of atoms, protons, neutrons, neutrinos - that universe only represents four percent of what there is. 23% is dark matter, which we think is the next vibration up of the string and then 73% of the universe is dark energy.

    Dark energy is the energy of nothing. It's the energy of the vacuum. Between two objects in outer space there is nothing, nothing except dark energy, dark energy, which is pushing the galaxies apart. So when people say if the universe is expanding they say two things, what's pushing the galaxies apart and what is the universe expanding into. Well what's pushing the galaxies apart is dark energy, the energy of nothing. Even vacuum has energy pushing the galaxies apart. And then what is the universe expanding into? Well if the universe is a sphere of some sort and we live on the skin of the sphere and the sphere is expanding what is the sphere expanding into? Well obviously a bubble, a balloon expands into the third dimension even though the people living on the balloon are two dimensional.

    So when our universe expands what does it expand into? Hyperspace, a dimension beyond what you can see and touch. In fact, string theory predicts that there are 11 dimensions of hyperspace, so we're nothing but a soap bubble floating in a bubble bath of soap bubbles and so in some sense the multiverse can be likened to a bubble bath. Our universe is nothing but one bubble, but there are other bubbles. When two bubbles collide that could merge into a bigger bubble, which could be the big bang. In fact, that is what probably the big bang is or perhaps a bubble fissioned in half and split off into two bubbles. That could be the big bang. Or perhaps the universe popped into existence out of nothing. That is also a possibility...

    Read the full transcript at

  • Milky Way and Andromeda Galaxy collision

    1:24

    In 3.75 billion years, Earth's Milky Way Galaxy will collide with the Andromeda Galaxy. Over the next several billion years, the two galaxies will rip each other apart, eventually creating one elliptical galaxy.

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  • The dark side of the universe | Tara Shears | TEDxArendal

    17:58

    In her spare time Tara communicates her science and work to a wide variety of audiences, through media, talks, on radio and film. In 2012 she became the first female professor of physics at Liverpool University. In this talk at TEDxArendal, she gives a glimpse into one of the largest mysteries in the universe – the unseen “dark matter”: what is it? Moreover; How do we find something we struggle to even measure?

    Particle physicist Dr Tara Shears is a researcher at the Large Hadron Collider (LHC) at CERN, the European centre for particle physics. Tara joined the LHC Beauty experiment at CERN’s Large Hadron Collider in 2004, where she started a program of electroweak physics – seeking answers as to why there is so little antimatter in the universe. She has performed many precise tests in particle physics theory, and her research program continues to this day.

    This talk was given at a TEDx event using the TED conference format but independently organized by a local community. Learn more at

  • The Biggest Ideas in the Universe | Q&A - Probability and Randomness

    42:56

    The Biggest Ideas in the Universe is a series of videos where I talk informally about some of the fundamental concepts that help us understand our natural world. Exceedingly casual, not overly polished, and meant for absolutely everybody.

    This is the Q&A video for Idea #19, Probability and Randomness. But mostly people were interested in Norton's Dome and determinism, so I chat a bit about that.

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    #science #physics #ideas #universe #learning #cosmology #philosophy #probability #bayes

  • What if a 1mm Black Hole Appeared on Earth? - Universe Sandbox 2

    13:47

    What if a 1mm Black Hole Appeared on Earth? - Universe Sandbox 2

    Small black holes on earth could destroy life as we know it!

    Create & destroy on an unimaginable scale... with a space simulator that merges real-time gravity, climate, collision, and material interactions to reveal the beauty of our universe and the fragility of our planet. Includes VR support for HTC Vive, Oculus Rift+Touch, and Windows Mixed Reality.

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    Universe Sandbox ² is a physics-based space simulator that allows you to create, destroy, and interact on an unimaginable scale.

    It merges real-time gravity, climate, collision, and material interactions to reveal the beauty of our universe and the fragility of our planet.

    Universe Sandbox ² includes the desktop version and a VR mode with support for the HTC Vive, Oculus Rift+Touch, and Windows Mixed Reality.

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    #simulator
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  • Cosmic connections: the Universe and You with Lawrence Krauss

    1:5:26

    Lecture brought to you by Science & Cocktails together with ECSJ2017/Danske Videnskabsjournalister/EUSJA.
    Find more about Science and Cocktails, and awesome science talks at
    You are intimately connected to the Universe in ways you might never have imagined. Every atom in your body was once inside other stars that exploded so that you could be here today. How did the universe begin? How will it end? Why are we here in a big rock called Earth travelling through space and time?

    Science & Cocktails, together with the Danish Association of Science Journalists, has the pleasure to invite you to a brilliant evening with theoretical physicist Lawrence Krauss at the Grey Hall in Christiania. In an event integrated in the 4th European Conference for Science Journalists, Lawrence Krauss, the acclaimed author of A Universe from Nothing, will be telling the greatest story ever told about the universe. An evening mixed with some of the finest cocktail mixology, light installations, live art by Henrik Schutze and music performances by Tromleorkestret feat. ROSYAN on cello and their robotic, fire spitting barrel organ, as well as the funky, steamy and surf jazz by the superstars The Orgelheimers and, last but not least, a piece that will trigger specific electrical impulses in your brain with incredible 2D graphics and algorithmic electronic music by Vectral.

    We may have unexpected connections to life elsewhere in the solar system, and you are also directly connected to almost every being that has ever lived on Earth. And even the most esoteric developments at the forefront of physics, from the Large Hadron Collider, to the discovery of gravitational waves impact on you in ways you might never have anticipated. In this evening, Lawrence Krauss will roam over modern discoveries in science from astronomy to particle physics, and from the remotest corners of the Universe to our own backyard.

  • 2018 Reines Lecture: Exploring the Universe with Gravitational Waves by Kip Thorne

    1:20:58

    The 2018 Reines Lecture was presented by Kip Thorne, winner of the 2017 Nobel Prize in Physics for the detection of gravitational waves. The discovery, part of the LIGO experiment, validated Albert Einstein’s longstanding prediction that during cataclysmic events the fabric of spacetime can be stretched, sending gravitational tremors across the universe. Thorne is a graduate of Caltech and Princeton University. His research has focused on Einstein’s general theory of relativity and on astrophysics, and he is co-founder of the LIGO Project. Among his many distinctions, Thorne has been awarded the Albert Einstein Medal, the UNESCO Niels Bohr Gold Medal, the Common Wealth Award for Science, and was named California Scientists of the Year. He was elected to the American Academy of Arts and Sciences, the National Academy of Sciences, and the Russian Academy of Sciences. In addition to his renowned scientific research in theoretical physics, he is involved in writing and movie production. Most notably, he worked on Christopher Nolan’s film Interstellar.

    Exploring the Universe with Gravitational Waves: From the Big Bang to Black Holes

    There are two types of waves that can propagate across the universe: electromagnetic waves and gravitational waves. Galileo initiated electromagnetic astronomy 400 years ago by pointing a telescope at the sky and discovering the moons of Jupiter. LIGO recently initiated gravitational astronomy by observing gravitational waves from colliding black holes. Thorne will describe this discovery, the 50 year effort that led to it, and the rich explorations that lie ahead.

    The Reines Lecture Series honors Frederick Reines, UCI’s Founding Dean of Physical Sciences and co-recipient of the 1995 Nobel Prize for discovering the neutrino.

  • What Happens If Earth Had Two Suns in Universe Sandbox 2

    17:57

    Welcome to Universe Sandbox 2! Create & destroy on an unimaginable scale... with a space simulator that merges real-time gravity, climate, collision, and material interactions to reveal the beauty of our universe and the fragility of our planet.

    Universe Sandbox 2:


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  • The Biggest Ideas in the Universe | Q&A 18 - Atoms

    56:25

    The Biggest Ideas in the Universe is a series of videos where I talk informally about some of the fundamental concepts that help us understand our natural world. Exceedingly casual, not overly polished, and meant for absolutely everybody.

    This is the Q&A video for Idea #18, Atoms. A bunch of good questions this week. Why certain particles decay into other ones, can there be negative-mass particles, and how do we know there aren't noticeable forces we haven't yet discovered? There's even a plot of experimental constraints!

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    #science #physics #ideas #universe #learning #cosmology #philosophy #particles #atoms

  • Scientists Just Found the Loneliest Galaxy in the Entire Universe

    10:02

    What’s the most lonely place you can imagine right now? An abandoned building? A deserted island? But let’s ramp up the scale beyond the skies and look at the loneliest places in the Universe – the Void Galaxies. It appears that astronomers may have just found the most solitary of them all.

    The Void Galaxy. That name suggests only the strangest placement of such galaxies. They’re alone and surrounded by enormous volumes of absolutely nothing. Just a dark void, with no stars, no planets, no matter at all. You may argue that everything in the Universe is surrounded by dark space. But have you ever heard about the Boötes void which is nearly 330 million light-years in diameter?

    Other videos you might like:
    Stephen Hawking’s 7 Predictions of Earth’s Demise in the Next 200 Years
    13 Scariest Theories That'll Make Your Blood Run Cold
    10 Facts About Our Planet You Didn't Learn In School

    TIMESTAMPS:
    The Void Galaxy 0:28
    The Great Nothing... What is it? 1:32
    Some mythology 2:12
    The galaxy deep in the void 3:57
    The Sombrero Galaxy 6:03
    The Southern Pinwheel Galaxy 6:54
    The Tadpole Galaxy 7:29
    The galaxy that looks like a dolphin 8:02
    Is the Milky Way going to collide with the Andromeda galaxy? 8:38

    #space #galaxies #brightside

    Hubble image of Arp 142: By NASA, ESA and the Hubble Heritage Team (STScI/AURA) - CC BY 3.0

    Animation is created by Bright Side.

    Music by Epidemic Sound

    SUMMARY:
    - The Boötes void, or as it’s also called: The Great Nothing, was proved to have about 60 galaxies. And that’s only the assumed number. Some estimations propose that The Great Nothing must have at least 2,000 galaxies in it.
    - The first scientific observation of another galaxy is of the Andromeda galaxy, and it was made by the Persian astronomer Al-Sufi in the 10th century. He noted Andromeda as a “small cloud”.
    - One of these lonely galaxies is the newly found MCG+01-02-015. It’s situated deep in the void. Just try to imagine, if we lived at this distance from any other galaxy, we wouldn’t have known that there’s another galaxy in the Universe until 1960.
    - This newly found galaxy found itself in a strange position because of the Universal expansion after the Big Bang.
    - At that time, all the matter in the Universe was concentrated in a tiny space. And then it exploded, pushing all that matter in all directions.
    - The further the matter goes from the initial explosion, the more the distance between different parts of this matter.
    - Void Galaxies may be the strangest type of galaxies in terms of their origin, but in the vast space of the Universe, there are a lot of other galactic scale miracles. For example, there’s one galaxy called the Sombrero Galaxy.
    - There are also galaxies that are interesting because of their rapid star generation and supernova explosions. The most notable of those is the Southern Pinwheel Galaxy. It looks like an enormous whirlpool of pink, blue and white.
    - Another wonder of the Universe takes the form not just of one galaxy, but of two that collide with each other. There’s the Tadpole Galaxy that has a large visible tail which formed when a larger galaxy literally merged with a smaller one.
    - Another example of a galactic crush is the Porpoise Galaxy that looks like a dolphin! What looks like the shining eye of this “dolphin” is, in fact, the core of the galaxy.
    - These types of strange galaxies are especially intriguing because we know that our own galaxy, the Milky Way, is going to collide with the Andromeda galaxy one day. Don’t panic! This won’t happen for another 4.5 billion years.

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  • 如果我們的宇宙和另一個宇宙相撞?| 大膽科學

    5:20

    兩個宇宙相撞看起來大概會很有意思,但我們可能需要擔心一下,它們相撞時會發生什麼呢?這將如何改變我們宇宙的物理規律?我們有存活下來的希望嗎?從地球上看到的碰撞將會是怎樣的?以前發生過這種事嗎?
    請多多支持和訂閱〜!
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    #大膽科學
    #whatif
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    #宇宙

  • What If Our Universe Collided With Another One?

    5:21

    What would happen to the laws of physics if our Universe collided with another one?

  • What if our universe collided with another one

    5:21

  • 5D Universe collision

    1:37

    The 5D Universe is the opening segment for ‘Origins: Life of the Universe’. Created Burmer Music and The Composition Lab.

    It's a new concept you may not find on the web and yet to be visualized by an artist. We were excited to tackle this incredible visualization! It took a lot of brainstorm collaboration and animation tests to achieve this theory, along with a desirable look! After months of software experimentation, we came up with a gorgeous visualization of two 5D universes colliding to create our universe.

    First, we attempted to use 3D Max and RealFlow, the results weren’t great with the simulation weren't right for the concept. We found combining Cinema 4D and After Effects achieved the results we were after. It gave us the creative control with textures and camera animation.

    Copyright Burmer Music LLC.

  • Whats the sound of two black holes colliding? Proof that Einstein was right

    5:27

    Gravitational waves -- ripples in the fabric of spacetime -- aren’t just an Einstein theory any more. A team of international scientists announced Thursday that they confirmed the waves’ existence after recording feedback from a black hole collision a billion light-years from Earth. Hari Sreenivasan learns more from Dave Reitze of the California Institute of Technology.

  • What happens when Black Holes Collide

    4:29

    When two black holes spiral towards each other and collide, they produce powerful gravitational waves. Scientists do not know much about these waves right now, but within about a decade, they will have collected pictures of the waveforms produced in many black hole collisions. These waveforms give us information about the properties of black holes and about oscillations of space and time. Anticipating a library of waveforms to be analyzed, CalTech physicist Kip Thorne is using computer simulations to create a waveform dictionary.

    Original Program Date: June 4, 2010
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    The World Science Festival gathers great minds in science and the arts to produce live and digital content that allows a broad general audience to engage with scientific discoveries. Our mission is to cultivate a general public informed by science, inspired by its wonder, convinced of its value, and prepared to engage with its implications for the future.

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  • Another Major Crater from a Recent Collision Found in Asia

    13:56

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    Hello and welcome! My name is Anton and in this video, we will talk about the newly discovered crater in SE Asia that was created by a huge asteroid 790 000 years ago.
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  • What Happens When Galaxies Collide?

    1:55

    Dr. Varoujan Gorjian takes us inside galactic collisions in this Ask an Astronomer video.

  • What If the Universe Was White Instead of Black?

    3:43

    If the Universe is full of stars, why doesn't it appear white? And if it did, what would that look like?

    Would all the black holes suddenly become visible? And if our sky was all white, would we still be able to see the stars?

    Let us break something to you. Black is not a color... as far as physics is concerned.

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    Made possible with the support of Ontario Creates

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    Imagination will often carry us to worlds that never were. But without it, we go nowhere. — Carl Sagan

    If you enjoy What If, make sure to check out our other channel Underknown:

    Produced by Underknown in Toronto, What If is a mini-documentary web series that takes you on an epic journey through hypothetical worlds and possibilities. Join us on an imaginary adventure — grounded in scientific theory — through time, space and chance, as we ask what if some of the most fundamental aspects of our existence were different.
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  • one of the deadliest thing in the universe: collision of neutron stars

    05

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