Did Time Start at the Big Bang?


  1. Jonathan Capps

    Jonathan Capps3 jam yang lalu

    I was focused on his left sleeve the entire episode.


    NASOOOBEE7 jam yang lalu

    what is wrong with your shoulders mate? and your videos are really terrible. each next video contradicts the previous one. Good job with the female hair aswell.

  3. مدح غير الله شرك

    مدح غير الله شرك10 jam yang lalu

    And the expansion of the universe mentioned in the holy qur'an : With power did We construct the heaven. Verily, We are Able to extend the vastness of space thereof Adh-Dhariyat : 47

  4. fahkrazyshaggy

    fahkrazyshaggy10 jam yang lalu

    I have so many questions about the big bang. Like how does the great attracters play in to this

  5. teleman07

    teleman0720 jam yang lalu

    Everything makes sense until you ask the question "why". Surely there should have been no big bang and nothing should exist at all. Why the universe exist with all this arbitrary mathematical constants and connections. Even if there are infinite number of universes where shiit like white holes exist and time goes backwards for chemical reactions and whatnot. Why TF is this the case?

  6. Jackaloopt

    JackalooptHari Yang lalu

    I believe that our singularity/Big Bang is just the output of a black hole.

  7. Open Wide

    Open WideHari Yang lalu

    That's what I'm thinking too...

  8. David DeLaney

    David DeLaneyHari Yang lalu

    The other thing encountering a singularity in your theory's math can indicate is that near there, you're using the wrong type of coordinates. (Examples: the singularity in the ordinary metric at the surface of a black hole; the singularities in Feynman diagrams from self-interaction loops, which 'renormalization' can solve.) This is even visually easy to see ... by looking at that same North Pole with longitude lines converging on it. Locally, the North Pole doesn't look any different from anywhere else on the sphere (just colder) - it's trying to measure things near it with a 'grid' made of lines converging from every direction that messes things up. --Dave, will mathsplain for food

  9. Sharath S Pawar

    Sharath S PawarHari Yang lalu

    Towards the end i thought youtube encountered a glitch in the suggestion where it started playing next video with Dope trance track even before previous video end :-D

  10. Joker3000

    Joker3000Hari Yang lalu

    7:04 my mind was blown by the position of the north pole! Thank u for showing! ;)

  11. Bobby You Tube

    Bobby You TubeHari Yang lalu

    I don't give a rats ass what you call it or how you explain it. You'll NEVER be able to explain WHY.

  12. Petteri Tuovinem

    Petteri TuovinemHari Yang lalu

    is it even meaningful to speak of an expansion in an infinite universe

  13. Carl Wheeler

    Carl Wheeler2 hari yang lalu

    Too many theories. I feel like these physicists are proposing these theories just to grab some attention. So.. I have come up with a theory; "The Universe is just the atomic structure of a huge cosmic dog turd."

  14. Jeff Allen

    Jeff Allen2 hari yang lalu

    I find it amazing how twisted these egg heads get when trying to explain this stuff. They totally ignore that God Himself was the one who created this all.

  15. Jeff Allen

    Jeff AllenHari Yang lalu

    @Pat Hill LMAO! I love triggering you Atheist... it's so damn easy.

  16. Pat Hill

    Pat Hill2 hari yang lalu

    Jeff Allen keep telling yourself that champ

  17. Justin Kuemmerle

    Justin Kuemmerle2 hari yang lalu

    I want Twister Theory.

  18. Jamie Lancaster

    Jamie Lancaster2 hari yang lalu

    Sounds like a whole lot of people were dropping LSD to come up with some these theories

  19. Chunchunmaru

    Chunchunmaru2 hari yang lalu

    Isnt anything north of the north pole south?

  20. Fernando Sanchez

    Fernando Sanchez2 hari yang lalu

    9:34 that kinda reminds me to the Riemann Z function which is another I don't understand but that have seen long ass videos about

  21. Stefan S

    Stefan S2 hari yang lalu

    Funny how science can be "beautifull" so much so we watch it without understanding most of it.

  22. rpbsjy

    rpbsjy2 hari yang lalu

    That NASA animation at 0:55 has the Big Bang spitting out fully formed galaxies, yet Matt included it in the video. No wonder we are confused...

  23. The Jim Reaper™

    The Jim Reaper™2 hari yang lalu

    I still can't get my head around the fact that the Universe is only 3 times older than the Earth... And that 13.8 billion years is nothing in the eons that the universe will carry on for were basically still in universe infancy!!!

  24. Aural Essex

    Aural Essex2 hari yang lalu


  25. robert harvey

    robert harvey4 hari yang lalu

    Those that say there cannot be time before the singularity do not conceive how a black hole is created. If a black hole is a singularity, then we know there was time before the singularity as in the collapse of a star to create the black hole and a singularity. To try to say there was no time before the Big Bang is a misnomer.

  26. David Lucas

    David Lucas4 hari yang lalu

    this one video answered many questions.

  27. David Lucas

    David Lucas2 hari yang lalu

    ​@Ryan Rauber i get it. in real life your a flake. a few drinks and mr 1 inch man becomes a keyboard warrior.

  28. Ryan Rauber

    Ryan Rauber2 hari yang lalu

    Also, I'm drunk sooo........

  29. Ryan Rauber

    Ryan Rauber2 hari yang lalu

    You're mom answered many questions last night when she was s'n my D. Boom!!!!!!!!

  30. Stefano Portoghesi

    Stefano Portoghesi5 hari yang lalu

    How do we know that the Universe began 13.8 billions years ago ? Surely that measurement of earthly "Time" may be valid for our human sphere of reality only but what about universal "Time" , one individual's past event in "time" may be another individual' future event in "time" .

  31. Alex Bordon

    Alex Bordon6 hari yang lalu

    I have a new gravity, time and consciousness theory that connects quantum mechanics, black holes, dark energy and gravity with existence and a universal balance, what should I do?

  32. Alex Bordon

    Alex Bordon6 hari yang lalu

    Any tips?

  33. 420drwilldo

    420drwilldo6 hari yang lalu

    If your really think about it what is time but the observation of the Decay rate of the universe so of theyer is nothing to decay then there is nothing to observe decaying

  34. Daniel Baenziger

    Daniel Baenziger6 hari yang lalu

    I think Carl would have really enjoyed these videos. Many thanks to Matt and his team for taking part of his mantle. Cheers.

  35. Spiritual Braces

    Spiritual Braces6 hari yang lalu

    i always wondered if our universe was just some black hole in another universe...

  36. Chris Howe

    Chris Howe6 hari yang lalu

    Was there a video that tackled the idea of Tachyons during expansion? My best guess. No. The density of the universe at the Singularity would create a difference in 'c' similar to what we see around a black hole. However, relativity brings us to a screeching halt there since it's from our perspective that 'c' is changing at all. Would this all come together to indicate that a sationary observer during expansion would in-fact have witnessed tachyon-level information transmission? Wouldn't this also mean that 'c' is relative to the observer and thus tachyons would be possible only from a certain perspective? Example: 2 starships travel conventionally at 0.75c towards eachother. The observer on starship a would witness starship b approaching at >c. viola! Tachyons??? This would also mean a new c is in order where 2c is "true" constant???

  37. Elias

    Elias7 hari yang lalu

    watching this sort of stuff feels a bit like getting my brain spanked

  38. Lelouch Yagami

    Lelouch Yagami7 hari yang lalu

    We can say 1 day before big bang...

  39. Steve Openshaw

    Steve Openshaw7 hari yang lalu

    I am an atheist, but listening to how convoluted all these different creation theories are, it makes me think that it may well just be simpler to buy that some old dude with a beard did it.

  40. Dave Anand

    Dave Anand7 hari yang lalu

    We only speak of one directional time in the positive direction - What about NEGATIVE Time Axis ???

  41. Back to Seattle

    Back to Seattle6 hari yang lalu

    Entropy wouldn't be to happy about it

  42. robert charlton

    robert charlton8 hari yang lalu

    time and space are very complicated, take for example, that we can travel at the speed of light and there are twins, that are astronaughts, 1 of them stays on earth and the other goes on a trip to jupiter at the speed of light, when he comes back, the twin that stayed on earth would be older than the twin that went to jupiter.

  43. Simon Coles

    Simon Coles8 hari yang lalu

    I'm a bit fan of the Penrose CCC theory

  44. Amzar Nacht

    Amzar Nacht8 hari yang lalu

    *heh* Time pre-dated the 'big bang' - but there was no way to measure it as the required atomic vibrations were at a standstill. Nothing got within a thousand light years without being sucked in... Once the trigger initiated, time could then be measured by the vibration of energetic particles that formed soon after. Time as *WE* know it - you know, these bone-encased gray blobs of neurons that have existed for about one billionth of a second on the 'year clock' of the life of the universe (as in, one billionth of a second from midnight, december 31st on that calendar) - is something only *WE* conceived and chose to call 'time', so what time was prior to the creation of our small corner of the greater macroverse well... it had already been defined by others. Perhaps others advanced enough to even manipulate or travel along it *then*

  45. chrisgotagun time

    chrisgotagun time8 hari yang lalu

    God is the big bang theory

  46. Faris

    Faris8 hari yang lalu

    Is anyone else triggered about the way he wears his shirt?

  47. Prestia2011

    Prestia20115 hari yang lalu

    Why cause it's lower on one shoulder? Maybe he's got uneven upper body

  48. Viker

    Viker8 hari yang lalu

    Im watching this video trying to expand my knowledge and get smarter and cause i like space but god why am i so stupid that i dont understand almost a single thing

  49. james caley

    james caley8 hari yang lalu

    Never trust anything with a singularity.

  50. M Johnson

    M Johnson9 hari yang lalu

    It seems like the Universe once expanded to a point of thermal equilibrium is the same as the universe before the big band at thermal equilibrium. What about a Bose-Einstein condensate could it be state of matter at the point before the big bang at the end of that expansion?

  51. 56pjr

    56pjr9 hari yang lalu

    "In the beginning, God created the Heavens and the Earth" (Genesis 1:1).

  52. Tymen Timmer

    Tymen Timmer9 hari yang lalu

    One thing that bothers me is the whole t=0 or t=something for that matter. How do you know what time we live in? And what happens from t=-1?

  53. Games Creator

    Games Creator9 hari yang lalu

    Thanks for exploding my brain...

  54. Deipatrous

    Deipatrous10 hari yang lalu

    Your maths is shaky. Which is a pity because this channel is better than most.

  55. djchristian82

    djchristian829 hari yang lalu

    Yea show your mathematical skills.

  56. Traian

    Traian10 hari yang lalu

    So, with a Planck time as the smallest unit of time and a Planck length as the smallest unit of distance, why is it mathematically such a problem? instead of infinitely divisible 0.something why not make 1 the smallest number possible (1 as in the singularity) and abolish fractions. (one is the smallest number, the next smallest is 2 ...) shouldn't the math solve itself after that? you get as far as you can get as long as you have space time, and before that it doesn't matter because without space time you can't define it. In fact if you want to go back the universe's beginning 2 is the farthest you can go because that's the actual first second and the first measurable size between 2 points (you need 2 at least points to measure a distance or an interval of time. P.S. -for you physicists out there: how is gravity warping space-time ? is the Planck unit of distance changing or what?

  57. Stan TheObserver

    Stan TheObserver10 hari yang lalu

    If the Universe was all at one point...then how could it be infinite? Also,dark energy was not all it was at the big bang as it grows as it still perculates out of nothing. Something's missing.

  58. Stan TheObserver

    Stan TheObserver7 hari yang lalu

    @djchristian82 They are certain that by any other name a force is expanding the universe. It's everything after that they can't say for certain. Dark Matter on the other hand might just be regular matter,just in microscopic bits and invisible clouds of it. Or not.

  59. djchristian82

    djchristian829 hari yang lalu

    Dark energy is nothing proven just a hypothesis.

  60. Lord Pyrex

    Lord Pyrex10 hari yang lalu

    Black holes consume all matter over time and eventually each other and eventually only one exists and eventually even that is taken back to a single point which then erupts back out into a new big bang.

  61. Luigi Cantoviani

    Luigi Cantoviani10 hari yang lalu

    Inflation is not a matter fact event.

  62. Roboprogs

    Roboprogs9 hari yang lalu

    Yeah inflation theory makes me cringe, too. Any observations of an inflation, or a falsifiable test? My theory is that the universe started are as something about the size of a lumpy beach ball 🤡 (But I don’t know how to test it, so it’s probably crap even more so) As Opus the Penguin said “Well, why not?!?”

  63. Theo0x89

    Theo0x8910 hari yang lalu

    6:34 _"we trace a path called a geodesic, which in general relativity is the shortest path between two space-time coordinates"_ More like the "straightest" path between two points in space-time. Typically it is the longest path, measured in proper time, which is the measure of length in space time. Also, "between two space-time coordinates" is an awkward formulation. There is no need to refer to coordinates, and the two endpoints of the path would correspond to two sets of four coordinates with respect to some coordinate system.

  64. neil u

    neil u10 hari yang lalu

    ok, but what size would a black hole be thats the mass of the universe? how could the big bang have started smaller than that? does information theory put a minimum size for the whole universes information to be stored on the surface a universe mass black hole? thanks

  65. Enki Son Of Anu

    Enki Son Of Anu11 hari yang lalu

    Not weird enough

  66. Hecka Nice

    Hecka Nice11 hari yang lalu

    No. Time starts with a point of consciousness

  67. Ive_y 79

    Ive_y 7911 hari yang lalu

    I watche this then I died

  68. Apollo Stone

    Apollo Stone12 hari yang lalu

    No one really knows how the universe started but mainly theories are the only thing to talk about. Again, we know nothing, yet we always explore somwthing.

  69. Jari Haukilahti

    Jari Haukilahti12 hari yang lalu

    Maybe time started big bang.

  70. memo redspectrum

    memo redspectrum12 hari yang lalu

    planc length has some idea

  71. Akshay Kalghatgi

    Akshay Kalghatgi13 hari yang lalu

    Has anyone ever considered the possibility that the Big Bang might have been a White Hole.

  72. Vincent Smith

    Vincent Smith11 hari yang lalu

    He kind of said that that was a possibility in different words

  73. Dominic A

    Dominic A13 hari yang lalu

    It’s magic !,no other explanation.

  74. ZERO3690

    ZERO369013 hari yang lalu

    I see.. Big Bang is not a theory any more, it is a fact and so we are now focused on other things to solve

  75. quidam

    quidam14 hari yang lalu

    Hey, great thanks from France !!! I was wondering if you'd talk about the BGV theorem some day as it seems to have a connection with beginnings ? I've heard about it but can't grasp the implications and on what assumptions it rests... Anyways, big big fan of yours !!!

  76. Andrew Pope

    Andrew Pope14 hari yang lalu

    I greatly appreciate this honest attempt at explaining this stuff however I am absolutely none-the-wiser

  77. Underscore Pete

    Underscore Pete14 hari yang lalu

    Is it possible that 3 of our universal forces already existed at the proposed time of the big bang and gravity then occurred for the first time in our universe? Can a universe exist without gravity?

  78. Ajit Jha

    Ajit Jha14 hari yang lalu

    I am inclined towards Holographic Universe. The space itself is a projection, where as the so called reality is somewhere else.

  79. PistolPunch

    PistolPunch14 hari yang lalu

    What if black holes singularity after vapourizing somehow creates an explosion which causes space to expand and creates new materials. Like dividing by 0. It would create and endlesss cycle of new universes everywhere.

  80. Martin L

    Martin L15 hari yang lalu

    Odd place to put this. I'm an evolutionary biologist, so am prone to be a Smolin fan boy. But this is something different, that all PBS channels have in common. I'm British and am totally sick to the teeth by the very American obsession with religion vs science. You don't really get it in the UK. To be honest, I am just SO cheesed off that everytime I look at something interesting, videos, below the video I'm watching, nearly always carry at least some videos by people who are either crazy, or have no idea what a theory means, and why science must always be agnostic, about everything. Sorry to have a rant. I'm just fed up with this unending war between OCD anti religion, and plain stupid anti science. Drives me nuts. So hooray for PBS, Crash Course etc. I am seriously in love with PBS. If you carry on, you might even get as good as the BBC. HA!

  81. Systematic Error

    Systematic Error15 hari yang lalu

    ALLAH is the GREATEST. idreporter.net/v/video-PyCezBD-5EQ.html

  82. Deborah Mahon

    Deborah Mahon15 hari yang lalu

    Our God is an awesome God.

  83. The Werewolf

    The Werewolf15 hari yang lalu

    Sure. but what about Galactus?

  84. Kyle Buchanan

    Kyle Buchanan15 hari yang lalu

    you have explained exactly nothing, cmon start making some meaningful videos please guys

  85. penguins forall

    penguins forall15 hari yang lalu

    Big bANG rewind 0000

  86. WolfgangLMclain

    WolfgangLMclain15 hari yang lalu

    Something just occured to me, the weight of the universe at its earliest point must have been ENORMOUS, what did that mean for the spacetime curve of the universe?

  87. LouSaydus

    LouSaydus14 hari yang lalu

    You should ask your mother, her rear is of similar density/mass.

  88. WolfgangLMclain

    WolfgangLMclain15 hari yang lalu

    *notices* *reaches into video to tug your shirt into place*

  89. Kirk-Da Rooster Gordon

    Kirk-Da Rooster Gordon16 hari yang lalu

    Science tells us you can't create something from nothing okay so what created the singularity that started the big bang?

  90. Romel Abou-Akl

    Romel Abou-Akl15 hari yang lalu

    Our laws of science break down at a certain time interval after the big bang, commonly associated with the plank length. I do not have an answer for you, and nobody can answer it because nobody has a good answer to that. Some people have formulated mathematical explanations of how it could have came from "nothing", but there definition of "nothing" can be considered to actual contain something. Also if time does not exist before the Big Bang occurred it actually does not make much sense to ask what happened before it, or what created it since that is a human wording of events that are in a sense timeless. It is hard for us to think of something as timeless. Of course if it stems from another multiverse/bubble universe, etc you can still trace it back to the initial moment in that time frame. Some propose a creator, as there are some logical arguments such as the Leibniz's cosmological argument and many others that attempt to show why there must be one. This is a field of fascinating advancements, logic, physics, mathematics and in some senses even spirituality as we seek where the atoms that make up our consciousness and everything around us stem from. Good luck on your journey for knowledge.

  91. Ulfat Dawood

    Ulfat Dawood16 hari yang lalu

    Doesn't the Big Bang Theory violate the "Law of Conservation of Mass" ??

  92. Theo0x89

    Theo0x8910 hari yang lalu

    Conservation of mass hasn't been at thing since Einstein discovered that mass is a form of energy. What you mean is conservation of energy, for which you would need a general definition of energy, which doesn't seem to exist in general relativity. But that's beside the point of your question, I guess, because you seem to think that the energy content of the universe somehow changed at the Big Bang. The Big Bang Theory doesn't say anything like that. It only says that the energy density used to be very high at some point in the past from which the universe went on to expand.

  93. Brian Cananzey

    Brian Cananzey16 hari yang lalu

    what if the universe does have a cyclical big bounce and each time it bounces it grows bigger than the last bounce. eventually if exceeds its ability to crunch any longer and after its last bounce it expands forever. We are in that expansion? Hmmm? Like a ball bouncing every time going higher and higher till it leaves the surface of the earth? ....excuse my while I hit this joint again!

  94. Harry H

    Harry H16 hari yang lalu

    Alien in another universe made our universe, their universe was in turn made the same way, ad inf, different universe different laws

  95. A Tothetop

    A Tothetop16 hari yang lalu

    Every Christian who appeals to the Big Bang theory from a causality perspective needs to see this!

  96. Subodh Khandekar

    Subodh Khandekar17 hari yang lalu

    At 5:22 ... It's not 3 dimensional... It's 4 dimensional space !!!

  97. Lucid D

    Lucid D17 hari yang lalu

    The big bang is like the mitochondrial eve in genetic, just a logical response from a bad question or attitude. Same with the chicken or the egg? question. They are just bias rooted in our social understanding and psychology. There is no mitochondrial eve that ever existed and both the egg and the chicken are phases in evolution, both cell forms and bodies evolved together to produce one or the other.

  98. tenaciousvalor

    tenaciousvalor17 hari yang lalu