Did Time Start at the Big Bang?

Publicat pe 18 iul. 2019
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Our universe started with the big bang. But only for the right definition of “our universe”. And of “started” for that matter. In fact, probably the Big Bang is nothing like what you were taught.
A hundred years ago we discovered the beginning of the universe. Observations of the retreating galaxies by Edwin Hubble and Vesto Slipher, combined with Einstein’s then-brand-new general theory of relativity, revealed that our universe is expanding. And if we reverse that expansion far enough - mathematically, purely according to Einstein’s equations, it seems inevitable that all space and mass and energy should once have been compacted into an infinitesimally small point - a singularity. It’s often said that the universe started with this singularity, and the Big Bang is thought of as the explosive expansion that followed. And before the Big Bang singularity? Well, they say there was no “before”, because time and space simply didn’t exist. If you think you’ve managed to get your head around that bizarre notion then I have bad news. That picture is wrong. At least, according to pretty much every serious physicist who studies the subject. The good news is that the truth is way cooler, at least as far as we understand it.

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Hosted by Matt O'Dowd
Written by Matt O'Dowd
Graphics by Leonardo Scholzer
Directed by Andrew Kornhaber
Produced By: Kornhaber Brown
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  • So did it or not tho. Tldr??

  • At every point in time, there's a past, present, and future. To say there was no time before the big bang would also suggest that there was no past. Also, basing present-day ideas solely on Einstein's theories cuts short our potential for growth. It's like saying, "We don't have to figure anything out, because Einstein did 75 years ago."

  • You finally explained space-time in a way I understand.

  • your mum started at the big bang

  • No, In order for the big bang to have happened time would have needed to begin existence. There had to be real estate for the big bang to occur. Otherwise, it would have been impossible for the big bang to come into existence according to the theory of the big bang.

  • What if it started when a program on a high tech computer started up and we are living in a simulation.

  • To some up.. we don’t know much but we have some theories based on some bad ass mathematical equations, that are based on theories, that come to prove or disprove other, theories... man I’m in the wrong line of work!

  • In the same way time does not end at the black holes I seriously doubt time started at the big bang. As the singularity suggests we obviously have the math wrong and should start over. What if instead of beggining time we end up outside of an event Horizon of an other black hole? We seriously might be living inside one. Is that not what GR suggests?

  • Amazing!!!!

  • Idk when time started but I know when it stopped ZA WARUDO

  • Practily; that seems to be the key word here everything is hype. but not any proof, science wow, we always need more info and there is never enough!

  • I think my brain just underwent a bid bang.

  • Did time start at the bing bang? Science: Well maybe but actually maybe

  • Why would the big bang be. When. We can't hear it why.Why It.s gravity waves. To be

  • At the big bang singularity I believe that were no space,there was nothinngness.

  • I am disappointed that you went like your listeners are creationists

  • Hi. Thick Newtonian person here. I cant get my head around expansion. If the universe is expanding then is the space between particles also expanding? Or do the forces within resist the expansion?

  • Its my third time a watch it... still lost ...going for 4

  • A hundred years ago we discovered that using a false metaphysics to understand math produces a pseudo-scientific restatement of the ancient religious claim that that God created the universe. Pythagoras said that justice is seven. He also warned against beans because they cause farting. One out of two is not bad.

  • Space and time, as Aristotle discovered w/philosophy, are relationships among things in the universe.

  • With philosophy, Aristotle identified the eternity of the universe. Some facts are too big for mere science.

  • What if particles are just shrinking because they're losing energy?

  • Is there exigent a theory for something akin to a black hole or singularity nova? To explain this we need to make the following assumptions. One, the 'center' of a black hole is not a mathematical singularity but rather something very similar to a neutron star. Indeed, under this model the smallest of black holes that form naturally would be simply a normal neutron star that has grown to a point where light can no longer escape it's gravitational pull. As this object continues to grow, though some mechanism that will not be addressed here, this object would then transition into a smaller object where in the neutrons consist not of up and down quarks, but of charm and strange quarks. Similarly at some much larger mass a transition would occur converting our object into one comprised of top/bottom neutrons. So why would there be a transition? At minimum/maximum curvature of spacetime the higher energy level quarks would become manifest due to overtaking their lower energy counterparts in terms of stability. During such a transition, volume would be greatly reduced while maintaining mass. Eventually however the mass of our object would reach a critical level. A point where top/bottom quarks begin to again destabilize but lack a higher energy counterpart into which to transition. At this point the amount of spacetime curvature would be so extreme that gravity would be approximately equal to the forces produced at the point of impact in a particle accelerator. As we approach this point small variations in the outward pressure exerted by it's constituent quarks would allow some neutrons to naturally superimpose. Thus triggering premature matter degeneration. To put this another way all mass in this twinned particle overlap would then be expressed as energy. And due to the nature of the local environment the type of energy expressed most I think would be heat. These transitions would slow our objects progression toward it's ultimate critical mass. But inflict an escalating level heat at and around the core. Allow this process to continue long enough and another type of critical level might be reached. The core may reach a temperature so hot that matter can no longer exist. At this point all bets are off as our tragically doom object collapses at an incredible rate carrying everything down to the smallest of possible measurements. A sphere with a one plank diameter. A true singularity comprised of only energy with no mass. Well what would happen then? First given the volume of this all temperature would be equalized. Space would suddenly no longer feel the pull of mass that had so severely warped its shape into so small a point. Space would be carried outward pulled by the adjoining space as it attempts to equalize its own internal pressures. The heat and other types of manifest energy is carried outward with this sudden expansion. And so we have the event we call the big bang. This is an interesting idea that I've been thinking on for many years now. It offers us not only a possible mechanism for how the big bang might have formed. But also an answer to what dark energy is comprised. Imagine if you will, that spacetime is expanding far faster than the effects we measure from the motion of galaxies moving away from one another. As spacetime washes over each galaxy it's is compressed and then decompresses as it moves through. This then giving rise to a kind of drag on spacetime that we can observe via the acceleration in the universal expansion. The inflationary period via this model is also very easily explained. Unhindered by the presence of mass, spacetime seems to explode outwards at far greater than the speed of light, carrying all that energy with it. Not in a kind of soap bubble but rather more akin to a sponge that is no longer compressed. Inflation stops once matter begins to form at the point where space is cool enough to allow it's coagulation. Thus a renewed compression/spacetime curvature became exigent. This would bring us to the natural question of, well why didn't everything just recollapse right then? And I think the most likely candidate to answer this would be spatial inertia. Additionally since matter/antimatter is being formed and systematically destroyed in it's creation cycle the amount of mass in any such system would necessarily be lower than the amount a mass in the original object. After all you have to account for all the heat and light that exists during this time. We can see the end result of this in what we call the universal microwave background radiation map. Lastly we come to the only scientific point of which I am aware that would counteract this model which is Stephen Hawking's calculations that point to time beginning at the big bang. What if, all the calculations are correct, but it means something that is subtly different than what we think it means? What if instead of the big bang being the beginning of time itself, the big bang was instead the beginning of the arrow of time. This leads into another idea of mine. What if the arrow of time acts in a way very similarly to that of the electromagnetic force. Move a conductive wire inside a magnetic field and you produce an electric field. Similarly what if the flow of spacetime past celestial bodies above, at, or near to the speed of light produces an effect akin to electricity flow. That being the monodirectional expression of time. Could someone either explain why this model is wrong, or point me to literature that can show the same. If that is not possible then I ask why don't we think that this is what happend?

    • > exigent Wow! You must read a lot of books.

  • I'm still not clear why it is assumed that BOTH matter and SPACE were concentrated in this infinitesimal space. Why could it not simply be that all matter expanded into a pre-existing void?

  • I hit play that's when time started.

  • But it is a theory and a fucking good one

  • Time started with God

  • No no; the universe was always hear. This world was once a piece of the sun. The big bang was a solar flare. An explosion in the sun ejected this rock, we call home. And way back a billion years ago. When this rock was ejected, it was still molten lava. As it cooled, as it traveled triugh space. It cooled off. And eventually water waper was formed. In a few million years after this rock was ejected from the sun it slowly turned and water waper formed. Water waper cooled the cracks, and eventually water became lakes. In time water became oceans as this world slowly stopped. That's how you hot this world. Eventually life was creating around. In the water. And the word was extremely hot still . Water wapor cooled things down.

  • This shit is so deep I can already see the 14 year olds in the comments.

  • I’m gonna have a panic attack.

  • What is the music playing at the end of the episode and where can I get it?

  • ro-tv.com/tv/video-JiMqzN_YSXU.html there was no big bang


  • I was just given to know this. The Universe is not infinite because of the true nature of reality. Still it's potential is Infinite.

  • This is purely in the realm of hypothesis, but I imagine our universe is the result of the long death of another one. The inexplicable physics of that universe formed an unimaginably large black hole, and the beginning of ours started from the end of its gravity well (that infinitesimally small point). It had a gravity so intense it not only ate light, it ate a lot of its spacetime as well (since as we know, mass warps spacetime). Then, the Big Bang is kind of a cosmic "appendix bursting" of that black hole, again via inexplicable physics.

  • Nah time is always constant you can not control time or fast foward it

  • The year O = 0 "No matter" who ? ro-tv.com/tv/video-0d5eP0wWLQY.html

  • Something came from nothing. Which means that nothing is actually something. Now what is it? Humans don’t know, can’t know ,and won’t ever know. With that being said the Big Bang just doesn’t haven’t without something already being present therefor time already existed obviously

  • I'm still not able to conclude whether time started with big bang or not.

  • Speed of light We have a measured speed of light of approximately 186 thousand miles per second We also have two other speeds of light you are not aware of. They are beyond measure yet they have value zero and the speed of now All that exists at the moment of the big bang is light+space and the absolute void the singularity exists within. The singularity at the big bang is light at speed zero, light does not move beyond the point of A The point of B does not exist as a point the ether is also a creation of the big bang. An ether expanding within an absolute void At the singularity were both light and space existing both within a single point and neither having any speed of movement the energy of the light was contained by the impedance of space otherwise light would have moved at instantaneous speed across the void and nothing would exist... All things being created from the interaction between space and light The speed of light through space from point A to point B is 186k miles per second The ultimate speed of light is now, it moves from point a to point b instantly With three speeds for light 2 intuited and 1 observed, you can calculate the impedance of space on light. knowing the impedance of space on light you can create new matter, consume matter for energy or extract energy from space itself. You could even move between 2 points faster than the speed of light. Unfortunately you cannot time travel because time does not actually exist