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2022-09-21: Science of the James Webb Telescope Explained!

  • 04:00: A big one is to study the early universe.
  • 04:03: The very first galaxies shone with intense ultraviolet light as the dense, young gas of the early universe collapsed into the first stars.
  • 08:49: ... empty spot on the sky, but which reveals 10,000 galaxies back into the early universe. ...
  • 09:42: Some of these things are shining at us from out of the very early universe - maybe when it was 7% its current age.
  • 04:03: The very first galaxies shone with intense ultraviolet light as the dense, young gas of the early universe collapsed into the first stars.

2022-08-24: What Makes The Strong Force Strong?

  • 07:55: ... enough energy, like in the very early universe or at impact point in a large particle collider, space gets sort of ...

2022-08-17: What If Dark Energy is a New Quantum Field?

  • 06:25: ... calculate the current expansion rate based on observations of the very early universe we get a different number. The latter is from Planck satellite ...
  • 09:13: ... For example, if the strength of dark energy has changed since the early universe then the Hubble tension could be ...
  • 06:25: ... cosmology is wrong. In order to calculate the Hubble constant from the early universe measurements, we also need to assume an equation of state to see how the expansion ...

2022-07-27: How Many States Of Matter Are There?

  • 06:10: However in the very early universe everything was a quark-gluon plasma, and that may also be true in the cores of massive neutron stars.

2022-03-30: Could The Universe Be Inside A Black Hole?

  • 07:37: ... very evenly spread out, and it was even more evenly spread out in the early universe. ...

2022-03-16: What If Charge is NOT Fundamental?

  • 12:31: ... happened to that force in the very early universe to force these charges to only take on a specific combination of values ...

2022-03-08: Is the Proxima System Our Best Hope For Another Earth?

  • 20:12: ... to leave an imprint on the CMB- on the density fluctuations from the early universe. ...

2022-02-23: Are Cosmic Strings Cracks in the Universe?

  • 00:58: ... Keep heating until you hit   temperatures of the extremely early universe and a  phase transition occurs in the quantum fields ...

2021-12-20: What Happens If A Black Hole Hits Earth?

  • 01:12: The early universe was a wild place. All space everywhere was a boiling particle soup.
  • 01:49: ... it was the smoothness of the early universe that saved all of matter from collapsing into black holes. But that ...

2021-11-10: What If Our Understanding of Gravity Is Wrong?

  • 10:21: One of the most important pieces of evidence  for dark matter as a particle is seen in the light that comes from the very early universe.
  • 11:45: ... managed to tweak their equations so that  in the early universe, that field behaved a bit like a type of matter, which Złosnik calls ...

2021-10-05: Why Magnetic Monopoles SHOULD Exist

  • 11:12: ... spontaneously in extremely high-energy environments like in the very early universe. ...
  • 11:36: GUTs predict that monopoles should be produced in enormous numbers in the very early universe - as abundantly as protons and electrons.

2021-07-07: Electrons DO NOT Spin

  • 16:45: ... properties due to their mutual connection to the outside. In the early universe, the extreme expansion of cosmic inflation may have permanently separated ...
  • 15:31: ... entropy was low. That smoothness seems to suggest the particles of the early universe  were already entangled - otherwise how did they spread out their ...

2021-04-13: What If Dark Matter Is Just Black Holes?

  • 03:31: When we look into the distance we’re actually looking back in time, so we can literally see star formation happening in the early universe.
  • 04:23: Fortunately for our hypothesis, there is a reason to think that colossal numbers of black holes may have formed in the very early universe.
  • 04:53: ... know there were regions of the early universe that had a bit more matter than other regions - we see that in the ...
  • 05:13: ... the same mass - but that mass depends on the details of the state of the early universe, and could be anything from a grain of salt to tens of thousands of ...

2021-03-16: The NEW Crisis in Cosmology

  • 10:08: ... that reverberated through the hot, dense plasma of the early universe. Now those ripples are frozen   into the distribution of ...

2021-01-26: Is Dark Matter Made of Particles?

  • 04:51: More accurately, it tells us how far dark matter particles were able to travel in the early universe.
  • 05:06: In the early universe, that distance influenced the size of the seed structures which galaxies would later form from.
  • 08:35: ... they may have been produced in the insanely energetic early universe, and the leftovers from that time could still be throwing their weight ...

2020-12-08: Why Do You Remember The Past But Not The Future?

  • 04:23: ... a second, let’s go as simple as possible - in the crazy energy of the early universe, a positron and a neutral pion particle combine to form a ...
  • 10:53: ... can form memories in one direction and not the other is because the early universe started out with this incredibly rich resource of correlation-lite ...
  • 12:23: ... with the big bang theory The distribution of matter and energy in the early universe does appear to have been random - which we normally associate with high ...
  • 12:58: ... Penrose puts it this way - in the early universe the low entropy was not in the degrees of freedom of the matter - that ...
  • 10:53: ... can form memories in one direction and not the other is because the early universe started out with this incredibly rich resource of correlation-lite states, which ...

2020-09-21: Could Life Evolve Inside Stars?

  • 06:02: ... example, there’s this scenario in this early universe symmetry-breaking stuff where, after the monopoles form, they split in ...

2020-08-17: How Stars Destroy Each Other

  • 12:12: ... black holes may have formed from the extremely dense matter of the early universe, and these would have different mass restrictions than stellar black ...

2020-08-10: Theory of Everything Controversies: Livestream

  • 00:00: ... the universe um they they do very well exist for example in the very early universe towards the big bang or in the center of black holes but also in ...

2020-07-20: The Boundary Between Black Holes & Neutron Stars

  • 13:53: A couple of you asked why we think there had to be an actual imbalance in the number of antimatter versus matter particles in the early universe.
  • 14:01: Couldn’t the two just have become separated in the early universe and now occupy different parts of the universe?

2020-07-08: Does Antimatter Explain Why There's Something Rather Than Nothing?

  • 00:22: ... In fact that’s how we think the first particles were created in the very early universe. But if matter and anti-matter are always created in pairs, then in the ...
  • 03:38: ... may have contributed to the asymmetry of matter and anti-matter in the early universe, in a process called “electroweak baryogenesis.” But, at least at the ...

2020-06-15: What Happens After the Universe Ends?

  • 03:44: So there’s a crude notion of how a tiny early universe could be equivalent to a gigantic late universe.
  • 08:15: But what about the early universe?
  • 11:18: ... a natural explanation for the extreme smoothness that we observe in the early universe. ...
  • 11:28: This was actually Penrose’s motivation in the first place: to explain the apparent smoothness of the early universe.
  • 11:45: ... is a standard explanation for the smoothness of the early universe - its cosmic inflation - a period of extreme exponential expansion that ...

2020-01-27: Hacking the Nature of Reality

  • 12:13: ... clusters - as collapsed from quantum fluctuations in the extremely early universe. ...

2020-01-06: How To Detect a Neutrino

  • 07:38: ... 𝘰𝘧 𝘴𝘺𝘯𝘵𝘩 𝘧𝘢𝘥𝘦𝘴) ♪ should have been created in equal quantities in the early universe, ♪ (𝘩𝘪𝘨𝘩 𝘦𝘯𝘥 𝘰𝘧 𝘴𝘺𝘯𝘵𝘩 𝘥𝘳𝘰𝘯𝘦 𝘸𝘪𝘵𝘩 𝘴𝘰𝘧𝘵, 𝘵𝘢𝘱𝘱𝘪𝘯𝘨 𝘳𝘩𝘺𝘵𝘩𝘮) ♪ and so, should ...
  • 08:31: ... according to leptogenesis, ♪ ♪ DR. DON (voiceover): neutrinos in the early universe may have decayed into other matter particles, ♪ ♪ with matter neutrinos ...

2019-12-02: Is The Universe Finite?

  • 00:27: This is the cosmic microwave background radiation - the left-over heat-glow from the very early universe.
  • 11:09: In fact, if the universe really is curved and closed, the discrepancy between the early universe and modern expansion rates becomes even stronger.

2019-11-11: Does Life Need a Multiverse to Exist?

  • 07:05: The stability of atoms and the rate of fusion in stars and in the early universe depends on the balance between electromagnetism and the strong force.
  • 07:19: ... that there are about the same number of protons as neutrons in the early universe. ...
  • 07:05: The stability of atoms and the rate of fusion in stars and in the early universe depends on the balance between electromagnetism and the strong force.

2019-08-06: What Caused the Big Bang?

  • 01:09: And these are strange particles predicted to have been produced in the early universe.
  • 07:26: ... inflation proposed by Alan Guth in 1979 goes something like this: In the early universe this mysterious in flattened field has a high field strength due to the ...

2019-07-18: Did Time Start at the Big Bang?

  • 01:22: ... is just a theory" Let me be very clear, the evidence for a hot dense early universe is practically ...

2019-06-20: The Quasar from The Beginning of Time

  • 06:15: Much of the quasars once ultraviolet light was sucked up before it escaped the early universe.

2019-06-17: How Black Holes Kill Galaxies

  • 02:54: ... would also merge all the while gorging on the rich gas supply in the early Universe So, Black Holes grew as Galaxies ...

2019-05-16: The Cosmic Dark Ages

  • 05:13: ... thick neutral hydrogen of the early universe was mostly transparent, but it did block some very particular types of ...

2019-04-24: No Dark Matter = Proof of Dark Matter?

  • 00:03: ... also give us a measurement of the relative amount of dark matter in the early universe compared to atoms once again roughly consistent with what we measure ...

2019-03-20: Is Dark Energy Getting Stronger?

  • 05:44: ... surprisingly, our measurement of the state of the early universe via the CMB may be more reliable than our measurement of its subsequent ...

2019-02-20: Secrets of the Cosmic Microwave Background

  • 00:08: ... radiation The remnants of the heat glow released when the hot dense early Universe became transparent for the first time It sounds like random static But ...
  • 02:05: ... the moment of recombination We'll see that the complex dynamics of the early universe are frozen into its spots That pattern will tell us exactly what the ...

2019-02-07: Sound Waves from the Beginning of Time

  • 03:21: ... Which means it was, by far, the dominant gravitational influence in the early universe as it still ...

2019-01-24: The Crisis in Cosmology

  • 06:47: ... another reason to try to calculate H0 from observation of the early universe It's that that observation I'm referring to is far more reliable than ...
  • 11:38: Insufficient numbers could skew the energy balance of the early universe, and mess up the calculation.
  • 12:22: ...than is predicted by extrapolating from the early universe.

2018-11-14: Supersymmetric Particle Found?

  • 04:57: That's the leftover heat glow of the very early universe.

2018-07-04: Will A New Neutrino Change The Standard Model?

  • 01:09: ... their existence would have had a huge influence on the expansion of the early universe. ...
  • 09:59: Add more neutrino types like the sterile neutrino and the early universe would have expanded faster.

2018-04-11: The Physics of Life (ft. It's Okay to be Smart & PBS Eons!)

  • 13:09: On the other hand, during the inflationary epoch in the extremely early universe, the cosmic event horizon was very close to every point.

2018-03-28: The Andromeda-Milky Way Collision

  • 10:43: ... hypothesis that dark matter was responsible for the cooling of the early universe relies on it being some sort of stuff that can interact with either ...

2018-03-21: Scientists Have Detected the First Stars

  • 01:05: [MUSIC PLAYING] So the very early universe was full of hydrogen gas and light.
  • 01:47: ... the early universe, the rate of hydrogen spin flip was in equilibrium with the CMB, meaning ...
  • 04:10: Measuring this range in itself, is a stunning discovery that will really help us understand the early universe.

2017-08-02: Dark Flow

  • 01:44: The CMB is the leftover heat glow from the hot dense early universe.

2017-06-07: Supervoids vs Colliding Universes!

  • 02:28: These were then amplified by a period of exponential expansion in the very early universe that we call inflation.
  • 12:36: You can see galaxies forming in the very early universe, but they're incredibly faint.

2017-05-31: The Fate of the First Stars

  • 02:12: They were born long ago, when galaxies like the Milky Way were still forming in the early universe.

2016-12-21: Have They Seen Us?

  • 07:33: One of its primary purposes will be to catch the radio emission from hydrogen gas in the extremely early universe.
  • 11:48: That redshifted 21-centimeter hydrogen emission really is one of the most important keys to understanding the very early universe.

2016-10-19: The First Humans on Mars

  • 10:54: ... idea because we see some pretty gigantic supermassive black holes in the early universe, and it's quite tricky to explain how they got that big if they grew from ...

2016-10-12: Black Holes from the Dawn of Time

  • 01:43: Now, matter in the early universe was pretty smoothly spread out, and the universe was expanding fast.

2016-04-06: We Are Star Stuff

  • 04:48: While the early universe had around 20 minutes to forge its nuclei, stars have millions to billions of years.

2016-03-16: Why is the Earth Round and the Milky Way Flat?

  • 11:33: Instead, the early universe is described as a very high density over an extremely large, and possibly infinite, volume.

2015-10-22: Have Gravitational Waves Been Discovered?!?

  • 04:42: ... we'd be able to study black holes, neutron stars, even the extremely early universe in ways never before ...

2015-09-23: Does Dark Matter BREAK Physics?

  • 05:53: Remember the hot, smooth plasma way back in the early universe that produced the CMB?

2015-04-01: Is the Moon in Majora’s Mask a Black Hole?

  • 08:22: Gareth Dean pointed out that the early universe contains not just hydrogen but also helium, and asks whether CMB analysis takes this into account.
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