Why Is The World Rushing Back To The Moon?
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The Moon has been one of the most important theoretical stepping stones to our understanding of the universe. We’ve long understood that it could also be our literal stepping stone: humanity’s first destination beyond our atmosphere.
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Spacetime is a production of Kornhaber Brown for PBS Digital Studios.
This program is produced by Kornhaber Brown, which is solely responsible for its content.
© 2024 PBS. All rights reserved.
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How Eclipses Revealed Our Solar System
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Of all the astronomical phenomena you can witness, the total solar eclipse has to be the most visceral–the most in-your-face reminder that our reality consists of giant balls of rock spinning around stars. It’s also the eclipse and phenomena like it that set us on the path to understanding that reality in the first place.
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Hosted by Matt O’Dowd
Written by Matt Caplan & Matt O’Dowd
Post Production by Leonardo Scholzer, Yago Ballarini & Stephanie Faria
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Spacetime is a production of Kornhaber Brown for PBS Digital Studios.
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What If Gravity is NOT A Fundamental Force? | Entropic Gravity
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There are four fundamental forces – the strong and weak nuclear forces, electromagnetism, and gravity. Except maybe gravity is no more fundamental than the force of a stretched elastic band. Maybe gravity is just an entropic byproduct—an emergent effect of the universe’s tendency to disorder. If you allow entropy to keep you in your seat for a bit, I’ll tell you all about it.
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Hosted by Matt O’Dowd
Written by Matt O’Dowd
Post Production by Leonardo Scholzer, Yago Ballarini & Stephanie Faria
Directed by Andrew Kornhaber
Associate Producer: Bahar Gholipour
Executive Producers: Eric Brown & Andrew Kornhaber
Executive in Charge for PBS: Maribel Lopez
Director of Programming for PBS: Gabrielle Ewing
Assistant Director of Programming for PBS: John Campbell
Spacetime is a production of Kornhaber Brown for PBS Digital Studios.
This program is produced by Kornhaber Brown, which is solely responsible for its content.
© 2024 PBS. All rights reserved.
End Credits Music by J.R.S. Schattenberg: https://www.youtube.com/user/MultiDroideka
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Dark Forest: Should We NOT Contact Aliens?
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In 1974 we sent the Arecibo radio message towards Messier 13, a globular cluster near the edge of the Milky Way, made up of a few hundred thousand stars. The message was mostly symbolic; we weren’t really expecting a reply. Yet surely other civilisations out there are doing the same thing. So, why haven’t we heard anything? What if the silence from the stars is a hint that we shouldn’t be so outgoing? What if aliens are deliberately keeping quiet for fear that they might be destroyed?
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Hosted by Matt O’Dowd
Written by Richard Dyer & Matt O’Dowd
Post Production by Leonardo Scholzer, Yago Ballarini & Stephanie Faria
Directed by Andrew Kornhaber
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Executive in Charge for PBS: Maribel Lopez
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Spacetime is a production of Kornhaber Brown for PBS Digital Studios.
This program is produced by Kornhaber Brown, which is solely responsible for its content.
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End Credits Music by J.R.S. Schattenberg: https://www.youtube.com/user/MultiDroideka
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The Real Science of Electromagnetic Pulse (EMP) Attacks
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EMPs aren’t science fiction. Real militaries are experimenting on real EMP generators, and as Starfish Prime showed us, space nukes can send powerful EMPs to the surface. So what exactly is an EMP, and how dangerous are they?
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Hosted by Matt O’Dowd
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Post Production by Leonardo Scholzer, Yago Ballarini & Stephanie Faria
Directed by Andrew Kornhaber
Associate Producer: Bahar Gholipour
Executive Producers: Eric Brown & Andrew Kornhaber
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Spacetime is a production of Kornhaber Brown for PBS Digital Studios.
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Did JWST Solve The Mystery of Supermassive Black Hole Origins?
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This is what we astronomers call a blob, or a smudge, if you want to get really technical. It may not look like much from here, but what do you expect for something near the literal edge of the observable universe. If you were there when this light was emitted, you’d A. be at the beginning of time, and B. be looking at an entire galaxy containing an enormous black hole at its heart. It’s the most distant black hole we’ve semi-directly detected. That’s cool enough on its own, but as an added bonus this one smudge may have solved the mystery of the origin of the supermassive black holes in our universe.
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Hosted by Matt O’Dowd
Written by Matt Caplan, Hayley West & Matt O’Dowd
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Spacetime is a production of Kornhaber Brown for PBS Digital Studios.
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Can Cosmic Voids Solve The Crisis in Cosmology?
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Two of the greatest mysteries in cosmology are the nature of dark energy and the apparent conflict in our measurements of the expansion rate of the early versus the modern universe that even dark energy can’t account for. Could both of these be explained by looking to a part of the universe that we’ve largely ignored so far? Could cosmic voids be driving the universe?
Episodes Referenced:
The Evolution of the Modern Milky Way Galaxy: https://www.youtube.com/watch?v=e3jGWXeBtPo&ab_channel=PBSSpaceTime
Dr. Beck: https://www.youtube.com/watch?v=HlNSvrYygRc&t=1s&ab_channel=Dr.Becky
Dr. Becky: https://youtu.be/-kTe0xRAU1w?feature=shared
Dark Energy Playlist: https://www.youtube.com/watch?v=-4PayaEgEZc&list=PLsPUh22kYmNAv1_8MA9-USkY6f2lfr1hb&ab_channel=PBSSpaceTime
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Hosted by Matt O’Dowd
Written by Matt O’Dowd
Post Production by Leonardo Scholzer, Yago Ballarini & Stephanie Faria
Directed by Andrew Kornhaber
Associate Producer: Bahar Gholipour
Executive Producers: Eric Brown & Andrew Kornhaber
Executive in Charge for PBS: Maribel Lopez
Director of Programming for PBS: Gabrielle Ewing
Assistant Director of Programming for PBS: John Campbell
Spacetime is produced by Kornhaber Brown for PBS Digital Studios.
This program is produced by Kornhaber Brown, which is solely responsible for its content.
© 2023 PBS. All rights reserved.
End Credits Music by J.R.S. Schattenberg: https://www.youtube.com/user/MultiDroideka
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Michael Lev
Terje Vold
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Paul Wood
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jim bartosh
Ramon Nogueira
The Mad Mechanic
John H. Austin, Jr.
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What If There’s A Black Hole Inside The Sun? | Hawking Stars
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A fun nightmare sci-fi scenario is the sun being consumed by a black hole. Fortunately the chance of a black hole randomly wandering into our solar system is pretty tiny. That’s good news. But what if it’s already here, hiding in the core of the Sun and slowly eating it from the inside out?
Hawking Stars Journal Papers:
https://iopscience.iop.org/article/10.3847/1538-4357/ad04de
https://arxiv.org/abs/2312.07647
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Are Many Worlds & Pilot Wave THE SAME Theory?
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It’s hard to interpret the strange results of quantum mechanics, though many have tried. Interpretations range from the outlandish—like the multiple universes of Many Worlds, to the almost mundane, like the very mechanical Pilot Wave Theory. But perhaps we’re converging on an answer, because some are arguing that these two interpretations are really the same thing.
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Did AI Prove Our Proton Model WRONG?
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The humble proton may seem simple enough, and they’re certainly common. People are made of cells, cells are made of molecules, molecules are made of atoms, atoms are made of electrons, protons, and neutrons. And protons are each made of three up or down quarks. Simple stuff, right? All except for that last part. Protons are actually made of many, many quarks that happen to look like three only when we look at them in a particular way. And even then, sometimes they’re made of 5 quarks – including the charm quark.
Image Credit for 6:28 (https://youtu.be/TbzZIMQC6vk?feature=shared&t=388):
Proton Animation. Courtesy of James LaPlante, Sputnik Animation. © MIT and Jefferson Lab, 2021, All Rights Reserved. The Visualizing the Proton Project is presented by the MIT Center for Art, Science & Technology, Jefferson Lab, and US Department of Energy’s Office of Science.
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00:00 Introduction
01:24 The Physics of Scattering
03:06 Using Electrons To Study Protons
04:11 3 Quark Proton Model
05:28 The Quark Sea
06:56 Charm Quark Evidence
08:04 Intrinsic Vs. Extrinsic Particle
09:51 The Uncertainty of Proton Experiments
11:09 QCD & Heisenberg Uncertainty
12:33 Proving the Theory of Intrinsic Charm
13:41 Testing Intrinsic Charm with AI