Timelapse of the future was as expected, a masterpiece. Check out Melodysheep here: @melodysheep Comment on what I should react to next! Peace and love!
Take a room with a certain temperature. If you expand the room but want to keep the temperature inside the same you need to add more energy to keep it at that level. The Universe is like the expanding room but with a limited amount of energy. Also, you can not create new stars from dead ones. It's like burning a pile of wood, taking the ash, forming it into wood shaped objects and try to set them on fire again. It won't work.
@@thanen2659 In the video, they say "Some brown dwarfs may collide and form accidental new stars". It's a bit misleading. They both only contain iron and of course they heat up after the collission but after that they will slowly cool down again, because you can not start the reaction needed for creating a star without hydrogen present.
@@zumogerstubchen2340 visually I do not think it is much misleading as it looks like it lost its light in a few moments. I do agree that calling it a star is misleading
@@zumogerstubchen2340 no it isn't misleading. Brown dwarfs aren't dead stars, they just have to little mass for anything except the most basic fusion. Hence why the collision of 2 heavy brown dwarfs could create new stars. I believe you're thinking of white/black dwarfs.
i love how ur reactions are so generic and not forced like most reaction youtubers these days really nice to watch, the sound was a lil bit quiet compared to ur voice but nothing major. keep it up!
and another thing xd, new stars cant be created at some point because the universe has a limited amount of Hydrogen (the fuel that stars are mostly made of) and there wont be any more coming from nothing so one day there will be no hydrogen left to form actual stars. thats why the accidental stars are caused by brown dwarfs colliding, because brown dwarfs are basically failed stars, because they didnt become hot enough to form a red dwarf which is just the smallest and longest lasting type of star ( the smaller a star is the longer its life span gets) and so brown dwarfs are basically to hot to be planets but too cold to be stars but if they collide this heat generates a star tho its a little different from "normal" stars. hope this explanation was helpfull ^^
a black dwarf's gravity is slightly more than a white dwarf, but not by an appreciable amount. The heat of the white dward caused its radius to be sligthly greater by thermal expansion, but you'd die either way if you tried to stand on one, so it doesn't really matter.
Basically, this is based off of my knowledge of the universe which is not much, but the reason why all stars will die is because when they die, there's less and less fuel to make new stars, so one star could go supernova, and not a single star could be born out of it. That's a terrible comment but I guess it works.
If you are really fascinated with this and want to learn more about how they've come to these various theories of the future of the universe, there is a book "The Five Ages of the Universe: Inside the Physics of Eternity". It's a bit dated now - it doesn't even reference dark energy - but it really helps add context around all of this.
I know this sounds dumb but I never really used to connect these ideas of th universe with......the universe. Like, I imagined it all and I understood it but it as as it I was seeing a really cool movie. Only recently has it actually occurred to me that all of this science is real. It's actual stuff that actually happens in our universe, our home, our origin. Fricking insane.
As far as we know the universe doesn't have an edge. The "edge" we see is just the observable universe (observable from earth). The Universe doesn't expand into anything. It expands into itself. (Kind of like increasing the resolution of a video). Also I think it doesn't create matter while doing so. I think it mostly just adds more dark energy.
You could think about that picture of bubbles as seen from a 5D dimension. A 3D universe can wrap up on itself in the fourth dimension, similarly to how a planet wraps up upon itself in the third dimension. Then we need a fifth dimension in order to have many 4D (4 spacial dimensions) universes each having their own space. However, if that quantum interpretation is true, that the multiverse is a constant block that contains all possible decisions, it could also be another way to have multiple universes. In that case, they're not existing in a sense of space. It's just that we only see and experience a part of that multiverse block, and the multiverse just means, that all decision paths are actually physically there. Viewing each path from beginning to the end could be seen as a universe in that multiverse. Then there could be as many universes as there are unique decision paths, or infinitely many, which would mean that for each decision path there are infinitely universes representing that path.
@@IroAppe Ok but what seems confusing is even if you could create a baby universe by smashing atoms together or whatever, you have to do it inside of a universe, what stops a blackhole from the original universe (the one the "baby universe" was made in) from swallowing it? Or does smashing the atoms together (however it was explained in the video) just somehow pops a new universe somewhere outside of the universe and the gateway simply allows stuff to enter it but not exit? Same thing about VR universes I wonder. If you create a Virtual Universe, you need machines to do it, what would stop something from destroying the machine which could destroy the VR universe and the people in the VR universe would just cease to exist.
Stars cannot form because all of the gas clouds required to form stars have been exhausted. Galaxy clusters are drifting away, and more space is cooling space.
So, here is one for the cyclical universe. You don´t neccesairly need a big crunch for it and what is shown here could very well be what sets up the next. It very much hinges on proton decay being a thing leaving only massless particles. In this example here, the universe is left es an even and formless sea of massless particles. Very much like the beginning of the universe, but much "larger" and colder. At least it would be except for one important point. Time has stopped and distance has lost it´s meaning. To a photon, moving at the speed of light, there isn´t any meaning in distance to another. The impotant part is relation to objects dictating the distance. Without objects there is no distance. And such we arive at a universe that is mostly the same as at the beginning of time. This also would help explain one major problem with our theories. Namely that we have no idea why the universe isn´t a perfectly even expanding plane of gas. Because the trajectories of the particles and their irregularitys would carry over, the end of the last giving the next one a little swirl, a tiny unevenness so stars and everything can form.
i just keep answering ur questions as i hear them lmao, regarding whats outside of the universe, as far as we know If there is An end or edge of the universe (which we also dont know for sure) There is probably absolutly nothing outside and i know absolutly nothing always sounds so confusing and it is because the human Mind can not imagine nothing we automaticly think of something for example a black void, but a black void is still black void not nothing u know. u just cant possibly imagine what nothing is because all we know is something. but in theory there could be literally anything outside of the universe. but u could probably never reach that nothing thats outside because even if u were to go in one direction significantly faster than the speed of light ud just end up where u started one day, and thats because u can not enter nothing, because something always needs to exist in something or else it would be nothing and also probably break every rule of physics there is xd
Some answers: A good metaphor for why the constant expansion would accelerate the end of the era of stars is this: Imagine you got a cup of warm hot chocklate in a magical cup that increases size as you pour something in. And then you start pouring cold water inside. Quickly it the hot chocklate will become cold and watery. And after enough water it has become so dilluted that you cannot even tell with a mass spectrometer that it once was hot chocklate. The chocklate being matter. And because the amount of matter and energy are fixed, but not the amount of space they exist in, the universe will at some point be so dilluted that no stars could form anymore because the matter is spread too far apart and no gas clouds could collapse into new stars. But even if the universe was static at some point the universe would end, because all energy would have at some point reached maximum entropy, spead perfectly even, nothing happens and nothing keeps happening forever. The same thing that cools of your coffee will at one point end the universe. Yes, the gravity of a black dwarf would be mostly the same as that of a white dwarf. So, I have seen that you wanted to ask one questions, Black Holes would not be impacted by proton decay as they are not matter. They are in a way just a point in space time held together by all the energy of everything that fell in from it´s birth to it´s end. And while we cannot be absolutely shure, we are pretty confident on that black hole "explode" in the end because of our mathematical models that have been very accurate in many other but related areas. Thus we can extrapolate that the decay is exponential, ending in an "explosive" release of hawking radiation at the every end. In a way it´s the fireworks at the end of time. The last "things" turning into only radiation.
Loved the reaction! If you're interested in space related videos, I recommend th-cam.com/video/zR3Igc3Rhfg/w-d-xo.html , where a team of only five people decided to build a true scale model of the solar system. Sizes and distances are accurate, but even knowing that, it's hard to believe just how massive the distances are and how small the planets are!
5:50 think of the universe expansion as if just space adds. Not it’s content, mass of matter and amount of energy are constant but universe still gets bigger
You need gas to form stars,.With an expanding unioverse gas get diluted to the point there isn't enough anymore to form any new stars. Given the age of stars millions for big one billions for star like our sun and finally trillions for small red dwarfs. thus 150 trillion years to go or so , if the expansion doesn't slow down or speed up for the stars to vanish.
![TIMELAPSE OF THE FUTURE: A Journey to the End of Time [REACTION]](http://i.ytimg.com/vi/GahSOgW5zbU/mqdefault.jpg)
![TIMELAPSE OF THE FUTURE: A Journey to the End of Time [REACTION]](/img/tr.png)
Take a room with a certain temperature. If you expand the room but want to keep the temperature inside the same you need to add more energy to keep it at that level. The Universe is like the expanding room but with a limited amount of energy.
Also, you can not create new stars from dead ones. It's like burning a pile of wood, taking the ash, forming it into wood shaped objects and try to set them on fire again. It won't work.
I see, I must have gotten that wrong then! Thanks for the explanation.
@@thanen2659 In the video, they say "Some brown dwarfs may collide and form accidental new stars". It's a bit misleading. They both only contain iron and of course they heat up after the collission but after that they will slowly cool down again, because you can not start the reaction needed for creating a star without hydrogen present.
@@zumogerstubchen2340 visually I do not think it is much misleading as it looks like it lost its light in a few moments. I do agree that calling it a star is misleading
@@n.v.n.prasad132 Yes, it would have more in common with a very young Earth than with a Sun.
@@zumogerstubchen2340 no it isn't misleading. Brown dwarfs aren't dead stars, they just have to little mass for anything except the most basic fusion. Hence why the collision of 2 heavy brown dwarfs could create new stars. I believe you're thinking of white/black dwarfs.
i love how ur reactions are so generic and not forced like most reaction youtubers these days really nice to watch, the sound was a lil bit quiet compared to ur voice but nothing major. keep it up!
and another thing xd, new stars cant be created at some point because the universe has a limited amount of Hydrogen (the fuel that stars are mostly made of) and there wont be any more coming from nothing so one day there will be no hydrogen left to form actual stars. thats why the accidental stars are caused by brown dwarfs colliding, because brown dwarfs are basically failed stars, because they didnt become hot enough to form a red dwarf which is just the smallest and longest lasting type of star ( the smaller a star is the longer its life span gets) and so brown dwarfs are basically to hot to be planets but too cold to be stars but if they collide this heat generates a star tho its a little different from "normal" stars. hope this explanation was helpfull ^^
Ahhh I see I see
a black dwarf's gravity is slightly more than a white dwarf, but not by an appreciable amount. The heat of the white dward caused its radius to be sligthly greater by thermal expansion, but you'd die either way if you tried to stand on one, so it doesn't really matter.
oh and literally every time u think to ur self how do they know that, 90% of time the anwser is mathematics xD
Life is truly a gift, we live only because it’s possible for us to do so. There’s no divine being, just the universe and it’s ever expanding borders.
There is only so much hydrogen in the universe, like all feul it will one day run out creating no new stars.
Basically, this is based off of my knowledge of the universe which is not much, but the reason why all stars will die is because when they die, there's less and less fuel to make new stars, so one star could go supernova, and not a single star could be born out of it.
That's a terrible comment but I guess it works.
If you are really fascinated with this and want to learn more about how they've come to these various theories of the future of the universe, there is a book "The Five Ages of the Universe: Inside the Physics of Eternity". It's a bit dated now - it doesn't even reference dark energy - but it really helps add context around all of this.
9:38 gravity would be even stronger, since white dwarfs are still a little bit expanded due to inner radiation pressure, black dwarfs are not
I know this sounds dumb but I never really used to connect these ideas of th universe with......the universe. Like, I imagined it all and I understood it but it as as it I was seeing a really cool movie. Only recently has it actually occurred to me that all of this science is real. It's actual stuff that actually happens in our universe, our home, our origin. Fricking insane.
White dwarfs aren’t actually the densest objects, you’re thinking of neutron stars, which have a few million times earth’s gravity.
As far as we know the universe doesn't have an edge. The "edge" we see is just the observable universe (observable from earth). The Universe doesn't expand into anything. It expands into itself. (Kind of like increasing the resolution of a video). Also I think it doesn't create matter while doing so. I think it mostly just adds more dark energy.
You could think about that picture of bubbles as seen from a 5D dimension. A 3D universe can wrap up on itself in the fourth dimension, similarly to how a planet wraps up upon itself in the third dimension. Then we need a fifth dimension in order to have many 4D (4 spacial dimensions) universes each having their own space.
However, if that quantum interpretation is true, that the multiverse is a constant block that contains all possible decisions, it could also be another way to have multiple universes. In that case, they're not existing in a sense of space. It's just that we only see and experience a part of that multiverse block, and the multiverse just means, that all decision paths are actually physically there. Viewing each path from beginning to the end could be seen as a universe in that multiverse. Then there could be as many universes as there are unique decision paths, or infinitely many, which would mean that for each decision path there are infinitely universes representing that path.
@@IroAppe Ok but what seems confusing is even if you could create a baby universe by smashing atoms together or whatever, you have to do it inside of a universe, what stops a blackhole from the original universe (the one the "baby universe" was made in) from swallowing it? Or does smashing the atoms together (however it was explained in the video) just somehow pops a new universe somewhere outside of the universe and the gateway simply allows stuff to enter it but not exit? Same thing about VR universes I wonder. If you create a Virtual Universe, you need machines to do it, what would stop something from destroying the machine which could destroy the VR universe and the people in the VR universe would just cease to exist.
Stars cannot form because all of the gas clouds required to form stars have been exhausted. Galaxy clusters are drifting away, and more space is cooling space.
So, here is one for the cyclical universe. You don´t neccesairly need a big crunch for it and what is shown here could very well be what sets up the next. It very much hinges on proton decay being a thing leaving only massless particles. In this example here, the universe is left es an even and formless sea of massless particles. Very much like the beginning of the universe, but much "larger" and colder. At least it would be except for one important point. Time has stopped and distance has lost it´s meaning. To a photon, moving at the speed of light, there isn´t any meaning in distance to another. The impotant part is relation to objects dictating the distance. Without objects there is no distance. And such we arive at a universe that is mostly the same as at the beginning of time.
This also would help explain one major problem with our theories. Namely that we have no idea why the universe isn´t a perfectly even expanding plane of gas. Because the trajectories of the particles and their irregularitys would carry over, the end of the last giving the next one a little swirl, a tiny unevenness so stars and everything can form.
i just keep answering ur questions as i hear them lmao, regarding whats outside of the universe, as far as we know If there is An end or edge of the universe (which we also dont know for sure) There is probably absolutly nothing outside and i know absolutly nothing always sounds so confusing and it is because the human Mind can not imagine nothing we automaticly think of something for example a black void, but a black void is still black void not nothing u know. u just cant possibly imagine what nothing is because all we know is something. but in theory there could be literally anything outside of the universe. but u could probably never reach that nothing thats outside because even if u were to go in one direction significantly faster than the speed of light ud just end up where u started one day, and thats because u can not enter nothing, because something always needs to exist in something or else it would be nothing and also probably break every rule of physics there is xd
Woah, this blew my mind trying to understand what you typed haha!
@@thanen2659 hahah yea the universe is so incredibly fascinating ^^
Some answers:
A good metaphor for why the constant expansion would accelerate the end of the era of stars is this: Imagine you got a cup of warm hot chocklate in a magical cup that increases size as you pour something in. And then you start pouring cold water inside. Quickly it the hot chocklate will become cold and watery. And after enough water it has become so dilluted that you cannot even tell with a mass spectrometer that it once was hot chocklate. The chocklate being matter. And because the amount of matter and energy are fixed, but not the amount of space they exist in, the universe will at some point be so dilluted that no stars could form anymore because the matter is spread too far apart and no gas clouds could collapse into new stars.
But even if the universe was static at some point the universe would end, because all energy would have at some point reached maximum entropy, spead perfectly even, nothing happens and nothing keeps happening forever. The same thing that cools of your coffee will at one point end the universe.
Yes, the gravity of a black dwarf would be mostly the same as that of a white dwarf.
So, I have seen that you wanted to ask one questions, Black Holes would not be impacted by proton decay as they are not matter. They are in a way just a point in space time held together by all the energy of everything that fell in from it´s birth to it´s end.
And while we cannot be absolutely shure, we are pretty confident on that black hole "explode" in the end because of our mathematical models that have been very accurate in many other but related areas. Thus we can extrapolate that the decay is exponential, ending in an "explosive" release of hawking radiation at the every end.
In a way it´s the fireworks at the end of time. The last "things" turning into only radiation.
Loved the reaction! If you're interested in space related videos, I recommend th-cam.com/video/zR3Igc3Rhfg/w-d-xo.html , where a team of only five people decided to build a true scale model of the solar system. Sizes and distances are accurate, but even knowing that, it's hard to believe just how massive the distances are and how small the planets are!
OH MY GOD WHAT A GREAT REACTION!!
I know this was 1 year ago, but did you see “sounds of space” by melodysheep? I mean, you saw videos AFTER it…. So???
5:50 think of the universe expansion as if just space adds. Not it’s content, mass of matter and amount of energy are constant but universe still gets bigger
Did i hear that right you are 20 years old? You seem like a super intelligent or at least super interested one. Great video anyways.
You need gas to form stars,.With an expanding unioverse gas get diluted to the point there isn't enough anymore to form any new stars. Given the age of stars millions for big one billions for star like our sun and finally trillions for small red dwarfs. thus 150 trillion years to go or so , if the expansion doesn't slow down or speed up for the stars to vanish.
14:42 Yes! There called black hole mergers
First