I feel so calm listening to Brian describing things that are so massively larger than our day to day lives. It is soothing in a way that is better than guided meditation for me.
because he is a priest and not a scientist, they are being hired for the very same thing, they are simply preaching about different things. his very job is to sell the bs they made up to dummies who wont understand it anyway but will feel like they do listening to him....
I am a old, old woman who has loved science all my life. Today was the first time ever that I could truly grasp the curving of space and time. What an awe inspiring feeling. Thank you so much.
The beauty and majesty of science! Einstein thought, made the calculations and predicted that an eclipse would reveal stars that normally could not be seen would be. People did the experiment and Einstein's calculations were right.
Not exactly but close enough. It needed the eclipse to block the brightness of the sun to see the distant stars & measure the angle the light from that star would be bent by our sun & it was spot on. They measured the angle difference between the normal star position & the apparent star position change due to the proximity of the sun to the star's light as it bent around the sun.
nope, they werent, so the measures were adjusted several times because some matched newtons calculations some matched einsteins... suck when reality hits the fan
@@InformationIsTheEdge he WAS a genius, the problem is there was nothing to invent, so he had to invent something that could not be factchecked, he is the most genius fraud in the history of science and he literally bred the liars institutional science that is still going on and is consuming billions of dollars each years, btw, if you would educate yourself instead of accusing me of lying, you would already know actual facts and you would know i am right
@@InformationIsTheEdge this is from the 1919 newspaper "The sky was completely cloudy at the beginning of the eclipse, but about half an hour before totality they caught glimpses of the Sun’s crescent through the clouds. They took photographs exactly as arranged, but out of the 16 plates taken, only two showed as many as five stars each. Prof. Eddington was also unable to stay several more months to take check-photographs of the star field. Sir Frank explained in detail the apparatus both expeditions had employed, the way the photographic plates were measured back at the Greenwich Observatory, the corrections that had to be made for various disturbing factors, and the methods by which comparison between the theoretical and observed positions had been made." the important parts: totally cloudy, glimpses through clouds, only 2, corrections were made..... the fact is that several measurements were made both then and since and while more measurements was closer to einsteins prediction, many were closer to newtonian prediction, so there was no decisive proof ever I dont even mention that we simply guess the distances of stars based on their luminosity, even a tiny fault in telling the proper distance will cause the measurement to be wrong. factually, until we can correctly measure these distances, measure the refraction effects of the sun itself (and its atmosphere) we will NEVER have a chance to actually perfectly tell those angles
Perhaps, that's the price one pays when they acquire in-depth knowledge of how things work in the universe. Knowing Everything will make you happy, but everything will seem boring to ya leading to disappointment.
@@TheEgoBuster When you know so much you truly understand how little you know. Its the paradox of knowledge. To truly understand something you realise what you dont know. Its like a pussle with many empty spots waiting to be filled to build a complete canvas or image. Someone without knowledge would not see those empty spaces.
How it distorts space-time is by shrinking time between the beginning and the end. It is manifest to us as time dilation. There are very few ticks if the clock between the beginning and end of time, near a black hole. Time has shrunk there. So, the mass of a black hole devoured not only matter and light, but time itself.
I love the theory wasn't made to fit the observations we could see but it was thought up then ideas had to be thought up to try to test it & not only did it prove to be true but continues to hold to be true Einstein was obviously a genius with hindsight but thinking these things up without seeing evidence and constructing a idea to explain what see is not on same level of imagining the universe and your thoughts be correct is amazing
Well kinda. Scientists observed that light travel the same speed relative to you no matter how fast you’re going compared to the light source. Special relativity explained that
I would like to talk to Brian, I have some questions, that I think he could explain that would make it easier to understand this on more of a mundane way.
Quantum physics laws are very different than ASTRO physics namely because that world is sooooo small that gravity doesn't have the effect it does in a larger realm so electronic and magnetic forces have major influences.....
True. Gravity is weakest at quantum levels (but still exists, gravity is the reason why electrons orbit nuclei) but strongest at stellar levels. The biggest breakthrough yet to come will probably be the guy, or team, who brings a thoroughly tested theory that binds general relativity and quantum physics. That will be amazing.
@@TheVoodooMaker what's 'missing' between the two as such? Maybe once we understand dark matter, if it exists that is & not just misunderstanding gravity fully.
Good point. Space and time exist because matter exist, hence because mass exists. The sheet is a theoretical concept that has no physical concordance with reality.
Think of sitting on a trampoline, the fabric of it is like the fabric of space-time & your mass is like the Sun. Space-time is distorted by your mass. (it actually is btw) Now roll a ball toward you & it will roll around the curvature of space-time that you made. That's all he's talking about, in its simplest form that's how the Universe & gravity works! There's no such thing as a gravity force that Newton discovered it is mass affecting the fabric of space & time, space-time, that Einstein discovered. 👍
If you don't understand I hope this helps... Think of sitting on a trampoline, the fabric of it is like the fabric of space-time & your mass is like the Sun. Space-time is distorted by your mass. (it actually is btw) Now roll a ball toward you & it will roll around the curvature of space-time that you made. That's all he's talking about, in its simplest form that's how the Universe & gravity works! There's no such thing as a gravity force that Newton discovered it is mass affecting the fabric of space & time, space-time, that Einstein discovered. 👍 ps. While it's not a single sheet like a trampoline , think an infinite number of planes & your travelling on one & each plane has the same shape as indicated & your mass presses into it as well. So you'd be on a vertical plane, ie. tilt your ph. It does the head in but you notice each object orbits in a plane not spiralling on its own through the plane as it goes around a plane, unless there is another object affecting it like earth & moon. Sorry if I lost you just take it step by step.
Imagine your daughter brings this guy home to you. Next thing you know you're throwing a shotgun wedding with the shotgun aimed at your daughter. I'm high
I recommend that everyone read Einstein's own reaction when he realized that he had finally solved this decades-long mystery of why the orbit of Mercury disagreed with the predictions done for the rest of the planets!
response of space an time to matter and energy is somewhat a strange thing to say. Suggesting a sequence. Maybe matter is a result of curved space and time. Like a lense in the sunlight causes a focal point.
The ball in a sheet explanation completely cheapens the concept and limits people imagination of what is really happening in a 4 dimensional universe as mass bends the fabric of spacetime
It's a great explanation but then I think, what if you just flew downwards from the sun, do you go through the space that it is bending or what, I'm lost lol
Yes. If you were on a trajectory towards the sun you would find yourself accelerating towards it. You'd be going faster and faster at the sun. This is also happening because spacetime is curved by the mass of the sun. The curvature of spacetime looks like an acceleration to us. So all gravitational acceleration is actually curved spacetime.
@@stoptryingtomakemeusemynam7829 thats not what he asked, he's confused by the "plane" of the fabric of space-time as such. Also, you can't just fall straight to the sun as we are also going around it, you have to slow down as well
While it's not a single sheet like a trampoline , think an infinite number of planes & your travelling on one & each plane has the same shape as indicated & your mass presses into it as well. So you'd be on a vertical plane, ie. tilt your ph. It does the head in but you notice each object orbits in a plane not spiralling on its own through the plane as it goes around a plane, unless there is another object affecting it like earth & moon. Sorry if I lost you just take it step by step.
Gravity doesn't actually hold the planets in position. The planets are traveling in a straight line through space, but matter or energy bends space. So, inertia keeps the planets going in a straight line through space.
Gravity does. Gravity (and other things, like huge energy-releasing phenomena) agregates matter in roughly spherical shapes while other, more distant objects influence each other also because of gravity. Gravity is universal and since it is M*M/distance², it's never 0 even quintillions of light-years away. Mind-boggling, isn't it ?
They are effectively falling into the gravity well but their speed remains effectively constant due to inertia. They rotate from when they formed having conserved the angular (rotational) momentum as they collapsed from gas & dust etc.
So... is space a 2 dimensional plane? If objects just sit on it and that's what curves it, that sounds 2 dimensional. I have to be wrong, but I need ot explained
@Darles Chikkins Okay, so it's just a simplified model. So it's not so much that objects in space sit on a plane but instead are nestled within many (infinite?) planes and space is curved in all directions, affecting things in orbit from every angle. Or am I still missing it?
@@no_one_worth_knowing It is a simplified representation of spacetime. Don't worry about the string theory part mentioned by the commenter above, that theory is currently on its way to the graveyard after the supersymmetry LHC experiment in 2021. Spacetime is NOT a plane, it exists everywhere, but if you were to take a slice of spacetime you would have to visualize it as a 3D warping of a plane since Spacetime is the 4th dimension and you can't see 4th dimensional shapes. If you want to attempt to imagine it outside of a bent plane, you should imagine it as an infinite number of colored points where red points bend space the weakest and violet points bend space the strongest. For example a lone planet would cause a spherical shaped influence on spacetime where the sphere would be red on the outer edges, green halfway to the center, and violet at the center where the planet is. If I were to take a slice from that sphere that also interesected through the centerpoint of the sphere. I would get a circle on a flat plane. This circle would be red on the edges, green halfway to the center, and violet at the center, except this time it's a circle which is 2D instead of 3D. We can turn it back into a 3D surface by using the colored points to represent bends on a plane. The red points are relatively flat, but the violet points cause a valley on the plane, and the green points are somewhere in the middle of red and violet, not quite flat, but also not creating extreme valleys in the spacetime slice. After converting all the colored points to bends on a surface , you finally have the diagram as seen in the short where the slice of spacetime creates a large 3D valley at the center of a celestial body. The amount of bending represents the strength of gravity, and this is a major simplification of how einstein explains gravity in general relativity.
Space is theoretically 2D and only becomes 4D when mass (and thus, matter) is involved. I say "theoretically" because space actually doesn't exist without matter. It would be like talking about life on Earth if Earth didn't exist.
I understand that completely yeah put a ball in the middle of a sheet then put a smaller ball rolling around it now put an other small ball on the edge witch is easier for the balls to escape the big ball is a black hole if we put gravity as time in space witch is faster the ball next to the big ball or the ball near the edge if that didn't help then swing a chain witch end will look like it's faster (imagine that the looks is faster) it would be the end that is further than the end that you are holding and that's how our galaxy works and now I'm 15 and I understand that but their are mathematicians that are struggling to understand how our galaxy works if that helps your welcome
And it all remains a theory as they admit "spacetime is not a fabric, not a medium, not tangible and not real" They also sheepishly admit "there's nothing you can do to detect spacetime" Classic PROPAGANDA!!
Well said. I have the same problem with the 'sheet' analogy/depiction for space time curvature. It's a good method to start the conceptualization, but it needs to be followed through...
It's going to take so long to make those who have to follow religious beliefs to believe the truth about life. Humans have followed beliefs of someone or thing lead us. Only time will prove reality.
Yeah but that is an old idea with holes in it. Not the truth that the lad who sells books and talks makes it out to be. For example, General relativity would mean quantum states cant exist. And they do. Were building quantum computers. And particle physics cant find a graviton particle to explain gravity as it exists in general relativity. If were all made from particles and gravity isnt ehat does that say? And Gravity is also weaker than it should be under general relativity by so much lads like this guy present it as some mysterious thing that leaks in from another dimension where it actually is as strong as general relativity says. Buuuuuuullllllssshhhh1t
I can't do the math behind it but I totally understand it. I once took a pre-college exam and blew the math part out of the water with a 96.5% percentile. But don't ask me today how I managed that cuz I can barely count above three trillion these days.😳🤣🤣🤣
I think its the magnetic field from each planet and from the sun .Will always keep its distances which gives it the waves frequency . To find out if are core has slowed down check at the bottom of are ocean the current follows the same direction of the core and the magnetic field help marine life with there sonar system like dolphins do locating were they are
@@michaelcurtis6077 You said "I think its the magnetic field from each planet and from the sun" which is wrong. Electromagnetism has nothing to do with the topic.
It's not, but space-time is, u really can't separate space and time....for example, I can say that my gf house is 5 miles away, I could also say my gf house is 10 mins away, and both would be true....5 miles represents space, and 10 mins represents time....same thing with distances in space...actually most scientists use time to describe distance, such as light years(the time it takes light to travel in 1 year"
4D exists because mass exists. Without mass, no gravity, without gravity, no 4D. But then, since space-time exists because of positive-mass particles, there can be and never was such a thing as "the sheet". It's a theoretical concepts to help us understand.
@@TheVoodooMaker the sheet doesn't make sense even for theoretical explanation. It would to an extent if all the objects in space were in the same axis. Or maybe his explanation is going over my head 😀😀
@@TheVoodooMaker I agree with 4D. But what I'm saying is using "the sheet" as an example has not made sense to me so far. If you can explain I will gladly listen. 🤷🏻♂️
Brian Cox is one of the very media few physicists out there who is humble about how much we know. He talks about things more in terms of theory rather than law.
the materace analogy is flawed. It’s only working when there is a gravitational force under the materace. So it’s just changing one force to the other. If this was true, the object going towards the sun would follow the curvature of space and not going directly to the sun, but going around it.
Mass has a bond to mass in space. Its the energy of mass that connects other celestial objects to each other. Distance between objects in zero gravity and the mass of them helps maintain those bonds. The effect of the sun on the earth forces the earth to get affected by friction to create axial rotation as a direct result of its solar orbit. As the outer stratosphere collides with 0 gravity on its orbit its that bond of the sun and earth that holds it in place. The knock on effect of our solar orbit is the earth's rotation on its axis then creates the lunar orbit as the mass of earth holds the moon in place and its axial rotation forces the moon to orbit earth the way it does. I theorise that the sun is moving and has some unnoticeable motion as part of the milky way that bonds all stars. It's just the energy of mass in motion that creates friction that's then creating more and more motion. General relativity and friction.
No! Just no! There is no 'bond' as in a gravity force. No friction due to orbit or whatever. No zero gravity, there is still micro gravity even on the ISS & beyond otherwise there would be no gravity between the Earth & moon, & Sun etc. The rotation of a massive object such as Earth or Sun does 'twist' the fabric of space-time locally but I don't think they describe that as friction at least not in the sense that you used it. I'm no expert but I'm calling Bullshit! Also an unproven scientific theory is referred to as a hypothesis until tested, proven & accepted as a theory and even then can still be disproven with a single experiment to the contrary. 🤔
I have another theory. Maybe the sun and the planets are magnets but not enough to stick and strong enough to push and bring back objects. What you guys think. I know it sounds silly but hey isnt it only a theory.
No because the electro magnetic force and gravitational force work very differently. They both interact with matter very differently. A theory is a model which is able to explain observations very well and since your model can’t it’s not a theory
Not a theory. Relativity has been proven and established for decades. All satellites have to compensate for time dilation due to the same effect. You can actually view distant stars by using the bending of light due to warping of space time as a lenses. Its called gravitational lensing.
Are you really questioning one of the brightest minds on earth over the subject that he is highly educated in??? I love seeing random people in comments that think they know more about a subject than someone who specializes in it lol
@@Gantali9305 Relativity is soon to be on the ash heap of scientific nonsense, like flat earth. It's predictions of dark matter, dark energy have proved to be as ludicrous as the idea of a "fabric" of space-time.
What about éternité, eternal...Why a Big bang? In what kind of Space (?) was the matter that caused the so called Big bang ? Why always reasoning within thé frame of what we know. Présume that we dont know anything!
Because these are the facts observed by cosmologists. That we don't know everything is true, but to draw the conclusion from there that we don't know anything is simply wrong and bigotous.
They can prove life, just look around you. We just can't explain HOW life came to be. We will someday be able to explain it but it will take time. In about 200 years we went from barely being able to harness electricity to having smartphones. It all took a long time though but here we are.
Yes- all life’ all around, everywhere and in everything, but still no proof in ‘how’ it was started!! Only answer- A Creator’ !!!a magnificent creator!
@@judyroland2959likewise you don’t know it was god. Scientists have shown that simple self replicating RNA exists which could have come about by random chance. Self replicating molecules can also evolve to form more complex systems of self replicating molecules. Lipids, proteins and nucleic acids can form abioticly. In short, we have a lot more evidence for abiogenesis than creation
It's 100% fact. General relativity is the best tested theory in physics. It has been tested through and through for over a hundred years and remains to this day. We know it's incomplete, but it's true nonetheless.
It's a great explanation but then I think, what if you just flew downwards from the sun, do you go through the space that it is bending or what, I'm lost lol
You get bent by the bent space. From your PERSPECTIVE you are still going straight. The interesting challenge to this, is the question: if you ( or light) believes it is going straight, then consciously is it not the space is bending, but that you (or light) are still going straight… people can google “Spacetime no longer a valid theory’ for more concepts & debates.
I feel so calm listening to Brian describing things that are so massively larger than our day to day lives. It is soothing in a way that is better than guided meditation for me.
The other day he proved we don't have souls in a voice so gentle I didnt even have an existential crisis.
because he is a priest and not a scientist, they are being hired for the very same thing, they are simply preaching about different things. his very job is to sell the bs they made up to dummies who wont understand it anyway but will feel like they do listening to him....
@@linwei-lee110you're going to believe someone who grew up on the same soil we did, that we don't have souls?
Sorry, i dont buy that for a second.
You can choose to be atheist because you're 16 and it makes you feel "cool" and "with the group"
But, one day you will learn, kid.
i love listening to Brian Cox. He seems really knowledgeable, without trying to say insane shit to get peoples attention.
I am a old, old woman who has loved science all my life. Today was the first time ever that I could truly grasp the curving of space and time. What an awe inspiring feeling.
Thank you so much.
You have to be a smart dude to explain Einstein’s theory so simply that I can understand it. 😮
Wherever the tension goes energy flows. Love it!
The beauty and majesty of science! Einstein thought, made the calculations and predicted that an eclipse would reveal stars that normally could not be seen would be. People did the experiment and Einstein's calculations were right.
Not exactly but close enough. It needed the eclipse to block the brightness of the sun to see the distant stars & measure the angle the light from that star would be bent by our sun & it was spot on. They measured the angle difference between the normal star position & the apparent star position change due to the proximity of the sun to the star's light as it bent around the sun.
nope, they werent, so the measures were adjusted several times because some matched newtons calculations some matched einsteins... suck when reality hits the fan
@@vargata What reality? That Einstein, the world's most celebrated genius whose name is synonymous with genius, was an idiot or that you lied?
@@InformationIsTheEdge he WAS a genius, the problem is there was nothing to invent, so he had to invent something that could not be factchecked, he is the most genius fraud in the history of science and he literally bred the liars institutional science that is still going on and is consuming billions of dollars each years, btw, if you would educate yourself instead of accusing me of lying, you would already know actual facts and you would know i am right
@@InformationIsTheEdge this is from the 1919 newspaper "The sky was completely cloudy at the beginning of the eclipse, but about half an hour before totality they caught glimpses of the Sun’s crescent
through the clouds. They took photographs exactly as arranged, but out of the 16 plates taken, only two showed as many as five stars each. Prof. Eddington was also unable to stay several more months to take check-photographs of the star field.
Sir Frank explained in detail the apparatus
both expeditions had employed, the way the
photographic plates were measured back at the Greenwich Observatory, the corrections that had to be made for various disturbing factors, and the methods by which comparison between the theoretical and observed positions had been made."
the important parts: totally cloudy, glimpses through clouds, only 2, corrections were made..... the fact is that several measurements were made both then and since and while more measurements was closer to einsteins prediction, many were closer to newtonian prediction, so there was no decisive proof ever
I dont even mention that we simply guess the distances of stars based on their luminosity, even a tiny fault in telling the proper distance will cause the measurement to be wrong. factually, until we can correctly measure these distances, measure the refraction effects of the sun itself (and its atmosphere) we will NEVER have a chance to actually perfectly tell those angles
Wish I could go back in time and take my family with me
You can dude, cross the event horizon in a black hole and you can go back or forward in time for however long that black hole exists 😃
People are really milking that episode 😂
Brian is so calm when telling the story..the way its told to us is what makes more people interesting
He was like disappointed 😞 and happy 😁 at the same time.
Perhaps, that's the price one pays when they acquire in-depth knowledge of how things work in the universe.
Knowing Everything will make you happy, but everything will seem boring to ya leading to disappointment.
@@TheEgoBuster When you know so much you truly understand how little you know. Its the paradox of knowledge. To truly understand something you realise what you dont know. Its like a pussle with many empty spots waiting to be filled to build a complete canvas or image. Someone without knowledge would not see those empty spaces.
@@Legion12Centurion Agreed!
I was minding my own business when I got roped into orbiting some star and next thing I knew I was covered with life forms. -- Earth
I thought about it when i was high few hours ago and it made sense
Yep it sure did 😂
How it distorts space-time is by shrinking time between the beginning and the end. It is manifest to us as time dilation. There are very few ticks if the clock between the beginning and end of time, near a black hole. Time has shrunk there. So, the mass of a black hole devoured not only matter and light, but time itself.
Best explanation to date!
I love the theory wasn't made to fit the observations we could see but it was thought up then ideas had to be thought up to try to test it & not only did it prove to be true but continues to hold to be true Einstein was obviously a genius with hindsight but thinking these things up without seeing evidence and constructing a idea to explain what see is not on same level of imagining the universe and your thoughts be correct is amazing
Well kinda. Scientists observed that light travel the same speed relative to you no matter how fast you’re going compared to the light source. Special relativity explained that
His passion and demeanor are admirable.
I would like to talk to Brian, I have some questions, that I think he could explain that would make it easier to understand this on more of a mundane way.
The sheet visual is so hard for me to grasp for some reason, I heard someone mention it like foam; that made more sense to me somehow.
Wich way the spacetime bends?
Quantum physics laws are very different than ASTRO physics namely because that world is sooooo small that gravity doesn't have the effect it does in a larger realm so electronic and magnetic forces have major influences.....
True. Gravity is weakest at quantum levels (but still exists, gravity is the reason why electrons orbit nuclei) but strongest at stellar levels. The biggest breakthrough yet to come will probably be the guy, or team, who brings a thoroughly tested theory that binds general relativity and quantum physics. That will be amazing.
@@TheVoodooMaker what's 'missing' between the two as such?
Maybe once we understand dark matter, if it exists that is & not just misunderstanding gravity fully.
The sheet was just so people like you could understand it. It wasn't meant to be "the fabric of space-time" as everyone wants to call it.
Good point. Space and time exist because matter exist, hence because mass exists. The sheet is a theoretical concept that has no physical concordance with reality.
Amazing
I watched 5 times but still didn't understand
Think of sitting on a trampoline, the fabric of it is like the fabric of space-time & your mass is like the Sun.
Space-time is distorted by your mass. (it actually is btw)
Now roll a ball toward you & it will roll around the curvature of space-time that you made.
That's all he's talking about, in its simplest form that's how the Universe & gravity works! There's no such thing as a gravity force that Newton discovered it is mass affecting the fabric of space & time, space-time, that Einstein discovered.
👍
@@iRossco thanks a lot. Great explanation 👍🏻
Same here we must be stupid or special 😇
Space and time is a sheet!🤔 very interesting..
If you don't understand I hope this helps...
Think of sitting on a trampoline, the fabric of it is like the fabric of space-time & your mass is like the Sun.
Space-time is distorted by your mass. (it actually is btw)
Now roll a ball toward you & it will roll around the curvature of space-time that you made.
That's all he's talking about, in its simplest form that's how the Universe & gravity works! There's no such thing as a gravity force that Newton discovered it is mass affecting the fabric of space & time, space-time, that Einstein discovered.
👍
ps. While it's not a single sheet like a trampoline , think an infinite number of planes & your travelling on one & each plane has the same shape as indicated & your mass presses into it as well. So you'd be on a vertical plane, ie. tilt your ph.
It does the head in but you notice each object orbits in a plane not spiralling on its own through the plane as it goes around a plane, unless there is another object affecting it like earth & moon.
Sorry if I lost you just take it step by step.
Imagine your daughter brings this guy home to you. Next thing you know you're throwing a shotgun wedding with the shotgun aimed at your daughter.
I'm high
…what?
When you said you are high,
Is that a statement to inform us or a statement of realization by you?
@@rbrad0 He wants Brian as a son un law.
Why waste the time to write this?
@@michaelmarshall5300 He's high.
I recommend that everyone read Einstein's own reaction when he realized that he had finally solved this decades-long mystery of why the orbit of Mercury disagreed with the predictions done for the rest of the planets!
response of space an time to matter and energy is somewhat a strange thing to say. Suggesting a sequence. Maybe matter is a result of curved space and time. Like a lense in the sunlight causes a focal point.
But there is an opposite of everything, Life-Death Kind-Nice etc so is the reverse gravity that makes the ''fabric'' go upwards instead of downwards?
Hypothetically there could be some sort of anti mass that repels mass, but we haven’t seen it
Wow that's unbelievable..so it's like a sheet off paper and when you put something or matter it curves space...
Matter, and/or energy?
yeah but does it really bend the space and time, or only your perception of space and time?
The ball in a sheet explanation completely cheapens the concept and limits people imagination of what is really happening in a 4 dimensional universe as mass bends the fabric of spacetime
Doesnt it have to do with the Circular motion
So the earth must also be curving the sheet of space time, as the moon orbits it. Is that true?
U r so intellgent i m lucky to get u.
It's a great explanation but then I think, what if you just flew downwards from the sun, do you go through the space that it is bending or what, I'm lost lol
Yes. If you were on a trajectory towards the sun you would find yourself accelerating towards it. You'd be going faster and faster at the sun. This is also happening because spacetime is curved by the mass of the sun.
The curvature of spacetime looks like an acceleration to us. So all gravitational acceleration is actually curved spacetime.
yeah, its not an actual sheet you can pop through lol
@@stoptryingtomakemeusemynam7829 thats not what he asked, he's confused by the "plane" of the fabric of space-time as such. Also, you can't just fall straight to the sun as we are also going around it, you have to slow down as well
While it's not a single sheet like a trampoline , think an infinite number of planes & your travelling on one & each plane has the same shape as indicated & your mass presses into it as well. So you'd be on a vertical plane, ie. tilt your ph.
It does the head in but you notice each object orbits in a plane not spiralling on its own through the plane as it goes around a plane, unless there is another object affecting it like earth & moon. Sorry if I lost you just take it step by step.
@@iRossco Sure. But then in that case you wouldn't be on a trajectory towards the sun as stated in my comment.
Question: we know gravity holds the planets in possion, but what makes the planets move & rotate?
Inertia.
Gravity doesn't actually hold the planets in position. The planets are traveling in a straight line through space, but matter or energy bends space. So, inertia keeps the planets going in a straight line through space.
Gravity does. Gravity (and other things, like huge energy-releasing phenomena) agregates matter in roughly spherical shapes while other, more distant objects influence each other also because of gravity. Gravity is universal and since it is M*M/distance², it's never 0 even quintillions of light-years away. Mind-boggling, isn't it ?
@@TheVoodooMaker it does my head in that the gravity well exerts itself across vast distances not levelling out after a certain distance.
They are effectively falling into the gravity well but their speed remains effectively constant due to inertia. They rotate from when they formed having conserved the angular (rotational) momentum as they collapsed from gas & dust etc.
Ok, now I get it
cool idea,, just NOT sure Space as the same BENDING as on Earth with Atmosphere ,
That could be a way.
Why can’t I understand this? It seems so easy x some ppl & explains everything 😩
So... is space a 2 dimensional plane? If objects just sit on it and that's what curves it, that sounds 2 dimensional. I have to be wrong, but I need ot explained
easier to describe it in 2d, but you already know that we live in 3d
Straight line
@Darles Chikkins Okay, so it's just a simplified model. So it's not so much that objects in space sit on a plane but instead are nestled within many (infinite?) planes and space is curved in all directions, affecting things in orbit from every angle. Or am I still missing it?
@@no_one_worth_knowing It is a simplified representation of spacetime. Don't worry about the string theory part mentioned by the commenter above, that theory is currently on its way to the graveyard after the supersymmetry LHC experiment in 2021.
Spacetime is NOT a plane, it exists everywhere, but if you were to take a slice of spacetime you would have to visualize it as a 3D warping of a plane since Spacetime is the 4th dimension and you can't see 4th dimensional shapes.
If you want to attempt to imagine it outside of a bent plane, you should imagine it as an infinite number of colored points where red points bend space the weakest and violet points bend space the strongest. For example a lone planet would cause a spherical shaped influence on spacetime where the sphere would be red on the outer edges, green halfway to the center, and violet at the center where the planet is.
If I were to take a slice from that sphere that also interesected through the centerpoint of the sphere. I would get a circle on a flat plane. This circle would be red on the edges, green halfway to the center, and violet at the center, except this time it's a circle which is 2D instead of 3D. We can turn it back into a 3D surface by using the colored points to represent bends on a plane. The red points are relatively flat, but the violet points cause a valley on the plane, and the green points are somewhere in the middle of red and violet, not quite flat, but also not creating extreme valleys in the spacetime slice. After converting all the colored points to bends on a surface , you finally have the diagram as seen in the short where the slice of spacetime creates a large 3D valley at the center of a celestial body.
The amount of bending represents the strength of gravity, and this is a major simplification of how einstein explains gravity in general relativity.
Space is theoretically 2D and only becomes 4D when mass (and thus, matter) is involved. I say "theoretically" because space actually doesn't exist without matter. It would be like talking about life on Earth if Earth didn't exist.
Gravity is not curvature only
He didn't say it was
I understand that completely yeah put a ball in the middle of a sheet then put a smaller ball rolling around it now put an other small ball on the edge witch is easier for the balls to escape the big ball is a black hole if we put gravity as time in space witch is faster the ball next to the big ball or the ball near the edge if that didn't help then swing a chain witch end will look like it's faster (imagine that the looks is faster) it would be the end that is further than the end that you are holding and that's how our galaxy works and now I'm 15 and I understand that but their are mathematicians that are struggling to understand how our galaxy works if that helps your welcome
And it all remains a theory as they admit "spacetime is not a fabric, not a medium, not tangible and not real"
They also sheepishly admit "there's nothing you can do to detect spacetime"
Classic PROPAGANDA!!
gravity...? =
Light is not affected by gravity
I don’t believe the fabric of space is true, I reckon it’s more of a 3d grid and things get pulled in from every angle to a centre
Well said. I have the same problem with the 'sheet' analogy/depiction for space time curvature. It's a good method to start the conceptualization, but it needs to be followed through...
@@rickowenkennedy I’m just happy somebody got what I said😆 and glad you agree mate👍
@@Donkey-Salt-Videos Likewise!
A more appealing take:
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It can bend it
I love this guy.. But no matter what, I don't understand a single thing he says...
It's going to take so long to make those who have to follow religious beliefs to believe the truth about life. Humans have followed beliefs of someone or thing lead us. Only time will prove reality.
Yeah but that is an old idea with holes in it. Not the truth that the lad who sells books and talks makes it out to be. For example, General relativity would mean quantum states cant exist. And they do. Were building quantum computers. And particle physics cant find a graviton particle to explain gravity as it exists in general relativity. If were all made from particles and gravity isnt ehat does that say? And Gravity is also weaker than it should be under general relativity by so much lads like this guy present it as some mysterious thing that leaks in from another dimension where it actually is as strong as general relativity says. Buuuuuuullllllssshhhh1t
I can't do the math behind it but I totally understand it. I once took a pre-college exam and blew the math part out of the water with a 96.5% percentile. But don't ask me today how I managed that cuz I can barely count above three trillion these days.😳🤣🤣🤣
I don't really understand gravitational lensing
Stare at something outside and gently with your finger press on the side of your eyeball...
Space tells the matter to curve in a round ball, probs why most things in space are round..
not in a round ball, in a plane around a ball
time only exist on Earth's🤣😂👽🤔
I think its the magnetic field from each planet and from the sun .Will always keep its distances which gives it the waves frequency . To find out if are core has slowed down check at the bottom of are ocean the current follows the same direction of the core and the magnetic field help marine life with there sonar system like dolphins do locating were they are
Gravity has 0 connections whatsoever with electromagnetism. They are totally different forces.
I didn’t say anything about gravity voodoo maker Hello
@@michaelcurtis6077 You said "I think its the magnetic field from each planet and from the sun" which is wrong. Electromagnetism has nothing to do with the topic.
Dude the clip is on gravity so your response is on gravity not fish & chips...that's a separate unrelated topic, get it!
Also, not all the planets have a magnetic field, eg Mars
Story up
I don't think time is real?
It's not, but space-time is, u really can't separate space and time....for example, I can say that my gf house is 5 miles away, I could also say my gf house is 10 mins away, and both would be true....5 miles represents space, and 10 mins represents time....same thing with distances in space...actually most scientists use time to describe distance, such as light years(the time it takes light to travel in 1 year"
This guy is a nut
That rubber mat sure has everyone fooled! It looks like an explanation, but when you think about it, it explains nothing at all!
Yeah it does just stop being stupid
I don't really buy that space & time is a sheet... 2D explanation of what is actually 4D.
4D exists because mass exists. Without mass, no gravity, without gravity, no 4D. But then, since space-time exists because of positive-mass particles, there can be and never was such a thing as "the sheet". It's a theoretical concepts to help us understand.
@@TheVoodooMaker the sheet doesn't make sense even for theoretical explanation. It would to an extent if all the objects in space were in the same axis. Or maybe his explanation is going over my head 😀😀
@@avinash5084 no you don't get it. Objects ARE the reason why they are not on the same axis. Objects create 4D by existing.
@@TheVoodooMaker I agree with 4D. But what I'm saying is using "the sheet" as an example has not made sense to me so far. If you can explain I will gladly listen. 🤷🏻♂️
its not space and time, its spacetime, one thing
Just say.....WE DON'T KNOW
Brian Cox is one of the very media few physicists out there who is humble about how much we know. He talks about things more in terms of theory rather than law.
But we DO know, he just told you.
We absolutely do know.
If space curve down round planet sun so most universum be flat .
The sun isn't a planet
Big Fusion orb
Just had an incredible idea about space time
the materace analogy is flawed. It’s only working when there is a gravitational force under the materace. So it’s just changing one force to the other. If this was true, the object going towards the sun would follow the curvature of space and not going directly to the sun, but going around it.
What the hell is a "materace"?
@@MultiRationalThinker sorry, bad spelling, it’s not my first language, I meant mattress. In assumed it’s more like in my language.
Is he a Elon friends a both work f government?😳
Mass has a bond to mass in space. Its the energy of mass that connects other celestial objects to each other. Distance between objects in zero gravity and the mass of them helps maintain those bonds. The effect of the sun on the earth forces the earth to get affected by friction to create axial rotation as a direct result of its solar orbit. As the outer stratosphere collides with 0 gravity on its orbit its that bond of the sun and earth that holds it in place. The knock on effect of our solar orbit is the earth's rotation on its axis then creates the lunar orbit as the mass of earth holds the moon in place and its axial rotation forces the moon to orbit earth the way it does. I theorise that the sun is moving and has some unnoticeable motion as part of the milky way that bonds all stars. It's just the energy of mass in motion that creates friction that's then creating more and more motion. General relativity and friction.
No! Just no!
There is no 'bond' as in a gravity force.
No friction due to orbit or whatever.
No zero gravity, there is still micro gravity even on the ISS & beyond otherwise there would be no gravity between the Earth & moon, & Sun etc.
The rotation of a massive object such as Earth or Sun does 'twist' the fabric of space-time locally but I don't think they describe that as friction at least not in the sense that you used it.
I'm no expert but I'm calling Bullshit!
Also an unproven scientific theory is referred to as a hypothesis until tested, proven & accepted as a theory and even then can still be disproven with a single experiment to the contrary.
🤔
I have another theory. Maybe the sun and the planets are magnets but not enough to stick and strong enough to push and bring back objects. What you guys think. I know it sounds silly but hey isnt it only a theory.
No because the electro magnetic force and gravitational force work very differently. They both interact with matter very differently. A theory is a model which is able to explain observations very well and since your model can’t it’s not a theory
If that is your best theory actually, oh my oh my, good night physics.
Not a theory. Relativity has been proven and established for decades. All satellites have to compensate for time dilation due to the same effect. You can actually view distant stars by using the bending of light due to warping of space time as a lenses. Its called gravitational lensing.
Thomas. When you get educated, then, and only then can you have an opinion worth listening to.
Are you really questioning one of the brightest minds on earth over the subject that he is highly educated in??? I love seeing random people in comments that think they know more about a subject than someone who specializes in it lol
Dunning-Kruger effect
@@Gantali9305 Relativity is soon to be on the ash heap of scientific nonsense, like flat earth.
It's predictions of dark matter, dark energy have proved to be as ludicrous as the idea of a "fabric" of space-time.
Einstein was wrong think of his theories the opposite way or backwards that changes everything and it will blow your mind
What ? Einstein' general relativity is the most tested theory in modern physics, it has withstood research breakthroughs extremely well.
Einstein is wrong
Good argument fella.
No he wasn’t
What about éternité, eternal...Why a Big bang? In what kind of Space (?) was the matter that caused the so called Big bang ? Why always reasoning within thé frame of what we know. Présume that we dont know anything!
Because these are the facts observed by cosmologists. That we don't know everything is true, but to draw the conclusion from there that we don't know anything is simply wrong and bigotous.
He gets paid from the government
😱
You are too foolish to say. You are saying something which already discovered in BCE.
Absolutely not.
But they’ still cant prove life!!!!😊
They can prove life, just look around you. We just can't explain HOW life came to be. We will someday be able to explain it but it will take time. In about 200 years we went from barely being able to harness electricity to having smartphones. It all took a long time though but here we are.
There is considerable progress in the origin of life field
Yes- all life’ all around, everywhere and in everything, but still no proof in ‘how’ it was started!! Only answer- A Creator’ !!!a magnificent creator!
@@judyroland2959likewise you don’t know it was god. Scientists have shown that simple self replicating RNA exists which could have come about by random chance. Self replicating molecules can also evolve to form more complex systems of self replicating molecules. Lipids, proteins and nucleic acids can form abioticly.
In short, we have a lot more evidence for abiogenesis than creation
Don't get too technical with Joe Rogan, he gets mesmerized by hand puppets...
Theories are just thoughts. Mean nothing actually.
Maybe you should look up what a scientific theory is
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I'm getting sick of this, We are here and now. No space and time
Thank god everyone doesn’t think like you.
@@CM-so1cf No, thank humans the best of us never thank god.
It's a theory not fact.
It's 100% fact. General relativity is the best tested theory in physics. It has been tested through and through for over a hundred years and remains to this day. We know it's incomplete, but it's true nonetheless.
wrong. this theory is totally not the reality.
Well said. Your Nobel prize in astrophysics awaits you. Congratulations!
@@rogerbee697 all what you hear from these ( scientists ) are bull 💩
dont follow others blindly.
@@L0ST-ALIENjust so you know GPS wouldn’t work unless we knew how relativity works
I was minding my own business when I got roped into orbiting some star and next thing I knew I was covered with life forms. -- Earth
It's a great explanation but then I think, what if you just flew downwards from the sun, do you go through the space that it is bending or what, I'm lost lol
You get bent by the bent space. From your PERSPECTIVE you are still going straight. The interesting challenge to this, is the question: if you ( or light) believes it is going straight, then consciously is it not the space is bending, but that you (or light) are still going straight… people can google “Spacetime no longer a valid theory’ for more concepts & debates.