Afterglow: Dispatches from the Birth of the Universe
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- Опубликовано: 22 май 2024
- Cosmology is the one field in which researchers can-literally-witness the past. The cosmic background radiation, ancient light streaming toward us since the Big Bang, provides a pristine window onto the birth and evolution of the universe. Already, the radiation has been key to confirming an early explosive expansion of space, determining the geometric shape of the universe and identifying seeds that resulted in galaxies. Now, the cosmic background radiation is poised to reveal when the first stars formed, what happened in the fraction of a second after the Big Bang, and the answers to a host of other bold questions about the cosmos. Join Nobel Laureate John Mather and other leading scientists who are leading the way.
The World Science Festival gathers great minds in science and the arts to produce live and digital content that allows a broad general audience to engage with scientific discoveries. Our mission is to cultivate a general public informed by science, inspired by its wonder, convinced of its value, and prepared to engage with its implications for the future.
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Original Program Date: May 31, 2012
MODERATOR: Lawrence Krauss
PARTICIPANTS: John C. Mather, Amber Miller, Lyman Page, David Spergel
Lawrence Krauss's Introduction 00:00
Robert Woodrow Wilson: Tuning in to the Big Bang 10:31
Participant introductions. 18:10
What lead you to the path of science? 20:45
Launching the COBE satellite. 32:45
Measuring temperatures 1/100,000 of three degrees. 36:50
When your wrong ... you move on. 41:34
The boomerang experiment from Antarctica. 46:54
How big is the universe? 52:43
How far back in time can we see? 58:54
Amber Miller and the EBEX project. 1:02:14
Polarization from gravity waves from the beginning of time. 1:06:16
What is the future of measuring the universe? 1:12:26
What is a microwave? Are we sure matter exists? 1:20:54 
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Lawrence is so adorable, lol. Then and now. I love the differences in his tone of voice when he’s in different settings. For example, the difference in his tone during things like the origins podcast vs debates. I also love how passionate he always is about the subject matter being discussed.
He is one of my faves, by far!
This may be the best moderated AND organized presentation out there. What an amazing panel.
Fantastic that this stuff (among many other similar videos from WSF) is available for us all
At 3 minutes 54 seconds,Yes; yes it is. With the timing it will be interesting to see which comes 1st .
What an amazing line up of brilliant scientists. Good job WSF, this one is going in the favorites category.
It's 2021 & the JWST, is yet to be launched - thought I hears "launch in 2018“.
Very interesting discussion. Thankyou.
update(?) it's 2022 and it is now in space! finally! yay!!
so great to get to see and hear from these scientists that I read about
these are the kinds of people I look up to
Great show
This was before the Plank results came in ... I am curious of what would this panel had said about it.
Great conference none the less.
Lawrence is brilliant...that was one of the best opening introductions to a discussion on this topic I think I've seen....
We love you Lawrence.
This amazing show had only 288K views in 8 years! What does this say about intellectual level of humans living on this planet?
Will be an amazing time for you guys now! Saturn and Jupiter 21st December 2020. New energies!
It one thing to say when you are looking at the star and the universe as it was hundreds of millions years ago. It's an enterally different thing to say you are looking back in time. It's not the same and it's not word interchangeably so I wish he would stop saying that we are looking back in time because we aren't. We are simply gathering up light that took millions of light years to get to us and show up what the universe looked like back then. It's not like when we zoom in that we see the future.
And we would never see the big bang no matter how far we looked back because it's already done. Assuming it's done like scientists say within seconds it was done and is now still expending. The numbers that dictate the arrow of time does allow time to run backwards.but if that happened we still wouldn't see the big bang because we came from other stars explosions so we wouldn't exist to see it. The only way we might kind of see the big band is on something simulated on a computer or whatever the next best invention is in the future. But still it would still just be a simulation and not see the real thing.
He keeps saying that we can look back millions of light years but thats not true. We are looking at light that reached our telescopes after all that time. We didn't look forward in time. We are always making telescopes that gather more light making stars that wouldn't have been visible because the are much further able to see. But that doesn't mean we saw further into the past technically. We are seeing an old-time snapshot once again. So again, so can't the big bang because we would need to be from where we were and since we have been shuffled around the universe out atoms would be sprayed out in all different places. No mind seeing a heat wall. And that if the big bang is still occurring
But... You _ARE_ actually looking back in time. Every direction you look, the farther away it is, the farther back in time you are looking. This is because light has a speed limit ('c'=300,000 kps). If light had infinite speed, you would be correct. But since it has finite speed, it both takes time to travel, AND doesn't experience the passage of time itself (Special Relativity) since it is traveling at "c". Therefore, the light you see from a galaxy 5 Billion light years away isn't 5 Billion years old, it's from 5 Billion years ago- a.k.a. "the past".
Yes, you really could see the big bang in principle (It's not possible with light, because light couldn't get through the charged soup, as they explained). The Universe has no center, no direction to the center, in space. (But it does in time.) Everything is expanding away from everything else, not from a central point in space. Every point is expanding from every other point.
However, everything _IS_ moving away from a central point in time. If you ran time backwards, you would find all lines in time meeting at one central time point- the origin of time. The direction of that time point is everywhere you look, it's like a sphere around the Universe. The farther away you look, the farther back in time you look. Time is a direction, and you can follow those lines (in direction) to the past. Time is a dimension.
For further reading, these lines are called "geodesics" and the point they all meet is called a "singularity". There are both "time" and "space" singularities. Yes, It's complicated. But it makes sense after a while. Some videos may help. Maybe "space-time" series from PBS would be a good starting point. They have lots of visuals.
What is the background reflecting the MBR that we can map? Why is the background not discussed by the speakers? Is this background the boundary of the universe and its outside, or is it some kind of a hologram? Does light from inside of the universe pass into the outside?
@The Truth of the Matter : I believe we came 13 odd billion years after the universe started expanding, making us far behind the radiation from the big bang, which according to you is also expanding continuously. I am puzzled that how do we map MBR if light from the radiation are not reaching us, while the radiation is expanding away from us? I hope I make myself some sense, do I?
I'm no scientist, though they say the waves are"micro", would it be possibly with computation to allow for an extended display of the waves as they were at the time of the big bang. Would that give a more logical display or picture of what we want to see? Is it even possible or plausible I suppose?
This is a great series. And I really like the short guy in tennis shoes with the bad t-shirt and leather jacket who is so into it he doesn't care how he looks. Enthusiasm is refreshing--its not about him, my dear Peta Flux, my darling Lowfun.
i missed the t shirt and tennis shoes
oh lol i see now. wasnt focused on attire so i missed it guess.
Wow, these guys just took the universe and turned into a something measurable, quantifiable and finite! All my life I thought the universe was infinite in every sense.
There has to be much more to the story than this. Otherwise we can pretty much predict how everything will come to an end.
Does anybody knows what happened to the EBEX balloon experiment. I can't find any reference in 2021 other than the same test flight they did in USA.
so, what were the results from EBEX?
Could the background radiation map that looked featureless be the missing mass of the universe the 95% that we don't know about and could it be water just my thoughts
Lawrence needs to stop saying "Uh" and "Um". He is the host and needs to get his shit together. that being said, this was a great video.
Psychologists get paid way more and all they do is say hmm and oh, go criticize someone who says ecksettra, nukilar, and eckspecially instead ;)
Another question that comes up when I watch this is they mentioned the age of the universe and the evolution could that happen more quickly than we are assuming just my thoughts
krauss always looks like he's just stumbled off a 1980's buddy cop movie. Amirite?
What if! We find out what happened at the start, replicate it & make a Big Bang then the life forms in that universe find out what happened at the start, replicate it & make a Big Bang……………. 🤯
LOL, B mode polarisation a complete failure, tells us why scientists shouldn't get too excited with every single one of their silly ideas.
I'll just bet you think you have much better ones.
@@8698gil well no, but i don't think you understand my comment. These silly ideas moves the frontier, and scientist end up wasting their and others money or time.
@@timewalker6654 Why do you think they are silly ideas?
If you think of it in quantum terms the reason why it looks like the universe is expanding faster and faster is because we keep trying to look further and further or observing it I can stop doing that it'll stop running from us
By the way how fast is the speed of looking at something is that governed by the speed of light I don't think so if you say you're looking at light that burned out billions of years ago,
I mean the sun is a really long ways away right so how come it's not going really slow. It doesn't make any sense that we can see light that exists and see like that doesn't exist at the same time even without looking through a magnifying glass, we're not switching our eyes into infrared,
So if we're seeing like it's already dead when does it really die how long does it last after death, these questions are there and nobody's asking them except my crazy ass
Maybe that's what we need to use for a propulsion system "magnification"seriously though if I turn a flashlight on and I'm in my bedroom it's not going to bounce off the walls it stops where a wall is, so if I take that wall down that light is not going to continue to someone that was too far away to see it when I turned it on in my bed room, so with all the space debris that there is out there, comments, meteors, trash it's an ever-changing environment, your billions of years something is going to block those lights and unless they are not dead they're not going to continue,
If I'm standing 10 blocks away with flashlight, you're not going to be able to see it unless you get a telescope, but that's only going to work as long as I'm there with the flashlight, once I'm gone it doesn't matter how far away you are you will never see that light it's gone it's out, now if it's bright enough that you can see it, the same rules apply, once the energy that creates that light is gone then the light itself dissipates decays and it's gone it doesn't continue to travel, the same goes for sound if you're too far away to hear it you never will
I'm I'm going to have to disagree with looking away to find the beginning I believe we have to look in a microscope not a telescope until we find non-existence but that's just me
An hour and a half, and the woman spoke for maybe 10 min total ??
(9*10^10/(137)^2)^(1/3)/(2*137)=0.25 ev about 300 photon for micro wave from big bang.
The numbers 731 have a lot of meaning for me why is this in your equation
@@Pie3.1 137 is the approximation of the inverse of the fine structure constant. In nu it's 1/(1/(4pi*epsilon_naught ))(e^2/hbar*c)
Well hello Mr Smarty Pants
What the fucking fuck? ANECDOTES for more than 30 mins???
“birth” of universe or divide in universe
Another question came up as I was listening about the science and its different backgrounds and personalities is a scientist received as a scientist because of his degree or because of his advancements or because of his personality traits all of the above or part of them I believe a scientist is one who's looking at the facts and trying to solve problems at different degrees not based on race age or degree just my thoughts
No idea why you'd bring up race or age - but you need to have a degree to be taken seriously as a professional scientist.
@@gullwingstorm857 Like Davinnci, Farraday, Franklin, Goodale, Mitchurin, Hooley Darwin, Edison, or Joule.....
To name a few that have shaped our world.
@@Pie3.1 Don't be deliberately obtuse.
@@gullwingstorm857 k...
Call me behind times but people dont believe evolution is real? Is that like a flat earthy kind of conspiracy theory?
When God spoke the first words into the universe, "Let there be light", I don't suppose it was a quiet moment. You can call it a bang if you want...
It must really take a lot of work to remain globally ignorant about biology. Especially with DNA and genetics nowadays. They must be exhausted all the time; Poor little creationists. The proof of evolution is everywhere. The facts they deny whilst sitting on their tailbones!
..you're
USA'NG.
.YOU AWARE SIGHING..
It’s Aliens.
What's up with these comments? xD
They are trolls right?
wow slug no kidding really bad on some of these other videas as well
Slug, I think many of the comments that you suggest are trolls, in my opinion are not. Instead it is the lack of knowledge combined with lack of comprehension of this vast and foreign subject "the beginnings of the Universe" that drives these made in jest comments.
Slug, I think many of the comments that you suggest are trolls, in my opinion are not. Instead it is the lack of knowledge combined with lack of comprehension of this vast and foreign subject "the beginnings of the Universe" that drives these made in jest comments.
Slug, I think many of the comments that you suggest are trolls, in my opinion are not. Instead it is the lack of knowledge combined with lack of comprehension of this vast and foreign subject "the beginnings of the Universe" that drives these made in jest comments.
الدحيح 💪
Lawrence makes stupid little jokes.
So what is another way to view that behavior? Can we see it as impulses arise in his (Lawrence or any person's) mind-body complex, and he verbalizes them, often impulsively, and that can be stupid or unintelligent. This can happen if he doesn't take into account (by having a feel for) what makes for 'coherence' in the flow of the conversation and can further the depth of the conversation and what does not further but more likely ends up interfering with the flow of the conservation. By this I mean impulses may or may not help with a deep seeing into what is under consideration and is being questioned in the conversation. The movement of mind or energy of consciousness in its raw state pops up as an impulse which gets it shape/color from a mainly yet to be conscious thought-form. At this point we need the 'presence of mind' to see and feel what is happening to us. "Thought-form" is a frozen bit or patterned bit of mind impulse that is a mixture in some ratio of memory and 'excitement of imagination. By being aware of our simple presence as whole body awareness, we can begin to learn the taste of how to deal with or regulate the impulses such that we can learn to harvest and entrain their energy to feed our presence and also allow us to begin to see deeper into the subject matter under discussion. We begin to penetrate into the depth rather than being stuck in the the energy being scattered (made more incoherent) and remaining more on the surface. We can learn to be more intelligent about how our minds work and how we can help our mind work more intelligently, see more deeply etc.
There is no big bang. Only dynamic motion.
there is no motion only fluctuations in light
I have always known that evolution was real. Unlike creation, which sounded suspiciously like a santa claus story to me from the time I was 8 years old. I was brought up religiously, but I don't remember my parents ever discussing evolution with us at all. It just didn't come up. When I went to school and learned about fossils and star formation and geological time scales it made absolute perfect sense to me and I never questioned it at all. I knew it was true. I dpn't understand why some people don't believe the facts when there is so much evidence. I can only assume it is a form of cognitive dissonance. If the facts contradict their religious beliefs, they must reject the facts if they want to retain their faith.
Evolution of the universe is real. But how life started from only animals insects or sea creatures to turn to man . It is actually the last conspiracy theory people should believe in. There are thousands of ways intelligent life should of started on earth .
1
Lawrence is my mother and I love my mother
Trolls have not mothers....Trolls are disowned kids .......
1:18:30 'Can't see oldest stars'. Has this guy ever heard of the Hubble XDF? It was focused to 50 billion light years (13 billion parsecs) and took photographs of stars in visible light. NO REDSHIFT.
Get your facts straight or learn how to read.
@@timewalker6654 Sure. Read about 'physicists' changing the laws of physics to eliminate a constant speed of light through expansion of a space-time fabric (which is composed of nothing) to accommodate a big bang theory based on an unproven equation which science has recently wasted over $50 billion on fusion reactors in an attempt to harness energy based on that same equation. Read about how scientists have given up on the notion of hydrogen because of those failures and learn how hot fusion theories now rely on a very rare element called deuterium - an element which does not exist in the Sun - instead. Maybe even read about the physical attributes of hydrogen, which has a boiling point of about 1,000 Kelvin at 9 billion ATM - which is the calculated pressure in the middle of the Sun - and realize that hydrogen would all boil away such that it is not possible that the interior of the Sun in made of hydrogen. Then maybe you can wake up and not support the science FICTION which is popularly presented as astrophysics. Then you can laugh at the idea of hydrogen at 1,744 times the density of solid hydrogen not boiling at temperatures above 13,000,000 Kelvin at 9 billion ATM and realize that astrophysicists don't a damn clue as to how this universe really works.
At this point, Physics explains so much so well, that to refute it you can’t just pick at some things you don’t think make sense. You have to come up with an alternate theory that explains at least as much. I assume this is your life’s work and we can look forward to it’s publication in 30 years. Writing one paragraph in the comments section of a RUclips video is not going to elicit the paradigm shift you are working towards. Probably best just to keep working at those equations in your magnum opus.
@@olanjw8587 I wrote a book called The Physics of Paradox Null. It's on amazon. I have other projects in the works. I operate AmericanPhysics on facebook.
@@jameso1447 Oh wow, I stand corrected! Congratulations on the book!
Does he have red tennis shoes on for playing tennis or basket ball ?
Moronvideos1940 neither
Gives a strange and not so nice feeling ... when our sun burns out!
Got a job as a carpenter?
I ask of the scientists out there is this the only story that could be true and if you say yes then you admit that you know all of the evidence and facts of the universe which we know is not true so if there's another story let's try to find all of the Avenues of how the beginnings could have happened instead of just throwing our money at this one just my thoughts.
A picture is worth a thousand words but you could be wrong about that just my thoughts
So we came from a white hole? I mean right.. Something so large and dense shrunk to a singularity then inflating suddenly expanding gas/matter... Definition of a white hole, correct?
Did they seriously mansplain what she said the one time she was called on? These guys need an equality check.
And you need a good beating.
1000+ views on this is enough to make me ill. What is wrong with our society???
James Benton Ticer Their All Watching Animal Porn & Kill Bill Movies That's What' Wrong With Our Society......1000+ views on this is enough to make me ill. What is wrong with our society???
71000+ views and counting, we’re doomed👍
TicToke + Twittler+ FarceBook= 15 sec. attention spans. You can't learn much in 15 seconds The only microwaves they're concerned with have a plug on one end.
All wonders of univese questions, where is life where is god where is timetravel all these are possible but are out of the bound of universe that we see.
God is beautiful who made the world so beautiful but we cannot see or find god because of our bounds.
god can make everything possible but has awerted those not so beautful possibilities. Those may have destroyed what we see now.
Ultimately it is god that has made universe and what we do is not what god did or does.
God can do all and will do what has been done so far.
God actions at distance and time and we are controlled by limits or our universe when we reach them else we can do what we want to with our lives.
God is good but has left us for some other work here.
The hard-to-find climb neurologically apologise because yew strangely record out a uptight wine. helpful, oafish health
This guy has already been debunked.
Proved = 101 ALLAH (s.w.t)
You shouldn't display your ignorance in comments. Now the whole world knows you're a fuckwit.
Who had proved that.You.
Bilal Khan idiot
soooo much effort, time and money is spent to understand nature of reality, and theologian want to pretend they are in the same league by just reading 2,000 year old books 😂
Cut the crap and get to the point wsf! I am sick of watching your overextended prologues!
Jm Crop
Or just make them much longer
How long until Lawrence makes one of his pathetic ill timed jokes about republicans.
Lefties think they're the majority, and seem oblivious to the last lot of elections all over the world.
They are so wrong...if radiation comes to us from around and the same distance to the horizon is 13.8 bilion light years around us it would mean that we are at exect center of universe but we are not !!!...so the conclusion is universe can not be 13.8 bly old must be older than that and bigger than that isnt it logic ???
Take the analogy of 2D space with a geometry of an inflating ball or a balloon. We know how fast the balloon inflates and we can also measure its curvature. This gives us the time estimate. No point on a spherical baloon is at "exact center" all were at the same point in the beginning and all get the same background radiation profile. COBE should obtain practically same picture being in any other galaxy.
Libor Tinka But the geometry of our universe seems to be flat...there is no curvature like on a surface of baloon.
tom tailor u did not understood anything, you have to open school book of physics
see wiki: Shape of the Universe
The flat universe may and may not be closed and finite. Of course, we can currently talk only about observable universe.
The flat and finite universe would look something like a Pac-Man maze where you leave right boundary of the maze and suddenly appear on the left. This is a simplification of a 3-sphere, but you have the idea...
I just dont think so that we life in a kind of pac man world...but i know what you are talking about...they say it can be more than 3D of space...so than it could be possible. so for a 4D space creatures we are a flatlanders and so on to 5D, 6D...and more
Why is it hard to explain in Arkansas? Are there a lot of blacks there?
Earth is Flat .
really can't stand this guy... !
A picture is worth a thousand words but you could be wrong about that just my thoughts