Did Time Start at the Big Bang?

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  • เผยแพร่เมื่อ 18 ก.ค. 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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ความคิดเห็น • 4 950

  • Pan Darius Kairos
    Pan Darius Kairos 2 ชั่วโมงที่ผ่านมา

    You can never get rid of the Singularity.

  • Doug G
    Doug G 4 ชั่วโมงที่ผ่านมา

    How does a group of waves of potentiality tell me all this in a video?

  • Aleksander Stensen
    Aleksander Stensen 6 ชั่วโมงที่ผ่านมา

    My crazy guess; when black holes have eaten a few hundred billion galaxies they will a some point through yet unknown physics collapse into a hot rapidly expanding gas (big bang) of hydrogen and helium. This happens all the time around us, but at distances and time scales we can not see yet. The bubbles of big bangs surrounding our big bang pulls on eachother causing our "universe" to expand faster. The extremely violent explotions of black holes vipes out everything in a very huge radius thus making life "short" lived and extremely rare.

  • kaiden8701
    kaiden8701 วันที่ผ่านมา

    Singularity is hard to believe. First is time, so the first star to come into existence burst light photons into space let's say not long after the singularity this photon traverses the universe all the way to our planet which could be billions of light years away but the photon is only a couple seconds old when it arrives,ok makes perfect sense. Matt was saying there was no space and time before the singularity so he essentially is saying that the singularity existed before it had anywhere to be or go before space and time. Also plenty of other issues that would take toolong to explain

  • Brian Spangler
    Brian Spangler วันที่ผ่านมา

    Time is a human concept. There’s no such thing. Only a long and unending chain of events.

  • Resty Moreno Lising
    Resty Moreno Lising 2 วันที่ผ่านมา +1

    i understand english, but i dont understand what he's talking about

  • Андрей Полевиков
    Андрей Полевиков 2 วันที่ผ่านมา

    Explanation of the Universe.
    The space of three dimensions arose from the space with zero number of dimensions. Three dimensions are cracks in zero space that can change their length. They are connected in the center between themselves and rotate around the center of the connection. If you look at them from three-dimensional space. The rotation of such a cell of space is time! The size of such a quantum or atom of space is 1/c2. In the universe of such quanta of space about 10-130 degree units. Time at the beginning of the birth of the universe at first went slowly, and time then began to accelerate. This acceleration determines the acceleration of the expansion of the universe. See here for more details.

    ru.calameo.com/read/0033783564a96e15b646e

  • Kyle Zappi
    Kyle Zappi 2 วันที่ผ่านมา

    This cool

  • John Constantine
    John Constantine 3 วันที่ผ่านมา

    So did it or not tho. Tldr??

  • David Kelly
    David Kelly 3 วันที่ผ่านมา

    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."

  • Ghost Noodle
    Ghost Noodle 3 วันที่ผ่านมา +1

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

    • grindupBaker
      grindupBaker วันที่ผ่านมา

      There's a 3-dimensional version of this talk if you're tired of watching it in the old 2 dimensions that we're all familiar with.

  • Jesse Galloway
    Jesse Galloway 3 วันที่ผ่านมา

    your mum started at the big bang

  • Ronald Gideon
    Ronald Gideon 4 วันที่ผ่านมา

    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.

  • Drew Berry
    Drew Berry 4 วันที่ผ่านมา

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

  • Aaron Fuller
    Aaron Fuller 4 วันที่ผ่านมา

    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!

  • Dougie Fuoco
    Dougie Fuoco 4 วันที่ผ่านมา

    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?

  • Ms Monir
    Ms Monir 4 วันที่ผ่านมา

    Amazing!!!!

  • Miguel Silveiro
    Miguel Silveiro 4 วันที่ผ่านมา

    Idk when time started but I know when it stopped


    ZA WARUDO

  • gradpa dave
    gradpa dave 4 วันที่ผ่านมา

    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!

  • Imran Shishir
    Imran Shishir 4 วันที่ผ่านมา +1

    I think my brain just underwent a bid bang.

  • Slotzoffun
    Slotzoffun 5 วันที่ผ่านมา +4

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

  • Richard bunt
    Richard bunt 5 วันที่ผ่านมา

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

  • Kevin Honesh
    Kevin Honesh 5 วันที่ผ่านมา

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

  • OmnissiahZelos
    OmnissiahZelos 5 วันที่ผ่านมา

    I am disappointed that you went like your listeners are creationists

  • Will
    Will 6 วันที่ผ่านมา +1

    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?

    • Supreme Taco84
      Supreme Taco84 4 วันที่ผ่านมา

      I think gravity holds em together

  • Ernesto Carlos Rodríguez Argüello
    Ernesto Carlos Rodríguez Argüello 7 วันที่ผ่านมา

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

  • TeaParty1776
    TeaParty1776 7 วันที่ผ่านมา

    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.

  • TeaParty1776
    TeaParty1776 7 วันที่ผ่านมา

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

  • TeaParty1776
    TeaParty1776 7 วันที่ผ่านมา

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

  • Phillip Otey
    Phillip Otey 8 วันที่ผ่านมา +1

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

    • Kevin Honesh
      Kevin Honesh 5 วันที่ผ่านมา

      Particles decay

  • Empathy is only human
    Empathy is only human 8 วันที่ผ่านมา

    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?

    • TeaParty1776
      TeaParty1776 7 วันที่ผ่านมา

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

  • EASYTIGER10
    EASYTIGER10 9 วันที่ผ่านมา

    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?

  • HowdeeTMM
    HowdeeTMM 9 วันที่ผ่านมา +1

    I hit play that's when time started.

  • Paulkeith Charlesworth
    Paulkeith Charlesworth 9 วันที่ผ่านมา

    But it is a theory and a fucking good one

  • dom crocitto
    dom crocitto 9 วันที่ผ่านมา

    Time started with God

  • Gerard Miller
    Gerard Miller 9 วันที่ผ่านมา

    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.

  • Lumpag
    Lumpag 9 วันที่ผ่านมา

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

  • SandBoy Null
    SandBoy Null 9 วันที่ผ่านมา

    I’m gonna have a panic attack.

  • Paul Swensen
    Paul Swensen 9 วันที่ผ่านมา

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

  • Wilfred Torres
    Wilfred Torres 11 วันที่ผ่านมา

    thclips.com/video/JiMqzN_YSXU/วีดีโอ.html there was no big bang

  • Marlo H
    Marlo H 11 วันที่ผ่านมา +1

    THE UNIVERSE IS FLAT! NASA USES LAZER BEAMS TO MAKE IT LOOK ROUND!!

  • Life's truths
    Life's truths 11 วันที่ผ่านมา

    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.

  • Steve Magruder
    Steve Magruder 12 วันที่ผ่านมา

    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.

  • Chris Ziga
    Chris Ziga 12 วันที่ผ่านมา

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

  • James Oconnor
    James Oconnor 12 วันที่ผ่านมา

    The year O = 0
    "No matter" who ? thclips.com/video/0d5eP0wWLQY/วีดีโอ.html

  • Rell-J
    Rell-J 12 วันที่ผ่านมา

    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

  • necromancer
    necromancer 14 วันที่ผ่านมา

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

  • lostbuffalo
    lostbuffalo 15 วันที่ผ่านมา

    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

  • lostbuffalo
    lostbuffalo 15 วันที่ผ่านมา

    Infinity is a word that means not measurable, or beyond measure.
    it is also used to say something is without value or beyond having a value
    to measure something you need to correlate it with something you know, like how you hold a ruler to line to measure the line.
    singularity is infinite in there not being a way to measure it
    But it is not infinite in the sense of having value
    Singularity is a value in itself just as zero has value on a number line.

  • lostbuffalo
    lostbuffalo 15 วันที่ผ่านมา

    Time is merely a mental construct the mind employs to differentiate between memory (past) experience (present) and intuition (future)
    There is no evidence that time exists as a force of nature
    Your mental construct is correlated with the world outside your mind creating the illusion of time.
    Modelling change, or cause and effect moving through time is a useful way of organizing your observations but it is an illusory mental crutch.
    cause and effect or change do not actually move through time
    your perception of change moves through your concept of time within your mind
    Time does not actually exist.
    The scientific error here is a rational inability to discern between reality and concept.

  • vince pie
    vince pie 16 วันที่ผ่านมา +1

    No, there were surely causal sequences of events before hand that resulted in the big bang, we just have no idea for sure what any of it was or could be.

  • Jack251190
    Jack251190 16 วันที่ผ่านมา

    Time started when matter or rather energy came into existence. Why? Think about how we measure time. It is the change of state or location of matter. Without matter, time means nothing.

  • AssmasterFlex69
    AssmasterFlex69 16 วันที่ผ่านมา

    gourd mad duh univarse n duh urf iz flatt, stoopid afiests

  • Mark R
    Mark R 18 วันที่ผ่านมา

    how do you measure and track a point in space in time? like, how can you compare the distance of two points in this moment and then the next moment? what even is a point? a quark? or the 'fabric' that the quark exists on? if comparison requires delineation, what is being compared?

  • Timothy Truitt
    Timothy Truitt 18 วันที่ผ่านมา +1

    "In the beginning.... God".

  • Kevin Castillo
    Kevin Castillo 19 วันที่ผ่านมา

    COPENHAGEN INTERPRETATION PROPER. I HAVE BECOME.

  • Kevin Castillo
    Kevin Castillo 19 วันที่ผ่านมา

    THE MORE INFORMATION I INTAKE, THE MORE IDEAS I FIND FROM THE PAST TO BE CORRECT WITHOUT A DOUBT.

  • Kevin Castillo
    Kevin Castillo 19 วันที่ผ่านมา

    ITS DO TO THE UNCOMFORTABLE TRUTH THAT NEEDS TO BE ACCEPTED. ALL OF YOUR PRESENTED QUESTIONS AND IDEAS ARE BOTH CORRECT AND THEN INCORRECT. EINSTEIN HAS NEVER BEEN INCORRECT, JUST NOT ENTIRELY UNDERSTOOD. STRING THEORY IS ALSO ONTO SOMETHING. *HUGH EVERETT*!!! CORRECT. REALISM PHYSICS CORRECT. LOCALITY COMPLETE. ASPECT, DALIBARD & ROGER ARE CORRECT. I AM PROOF. DISCOVER WHAT I HAVE BECOME.

  • ccall48
    ccall48 19 วันที่ผ่านมา

    Does time really exist if you're not mortal?

  • NoShaleGastly
    NoShaleGastly 20 วันที่ผ่านมา

    The background noise in this was annoying as fuuck