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Ever wish you could travel backward in time and do things differently? Good news: the laws of physics seem to say traveling backward in time is the same as traveling forwards. So why do we seem to be stuck in this inexorable flow towards the future? It’s time to begin our journey towards really understanding time.
Sign up for the mailing list to get episode notifications and hear special announcements! https://mailchi.mp/1a6eb8f2717d/space… by Matt O’Dowd Written by Matt O’Dowd Graphics by Leonardo Scholzer, Yago Ballarini, & Pedro Osinski Directed by: Andrew Kornhaber Assistant Producer: Setare Gholipour Executive Producers: Eric Brown & Andrew Kornhaber End Credits Music by J.R.S. Schattenberg: / @julesschattenberg Special Thanks to Our Patreon Producers Big Bang Supporters Sean Maddox Marty Yudkovitz Brodie Rao Scott Gray Ahmad Jodeh Radu Negulescu Alexander Tamas Morgan Hough Juan Benet Fabrice Eap Mark Rosenthal David Nicklas Quasar Supporters Justin Lloyd Christina Oegren Mark Heising Vinnie Falco Hypernova Supporters William Bryan L. Wayne Ausbrooks Nicholas Newlin Mark Matthew Bosko Justin Jermyn Jason Finn Антон Кочков Alec S-L Julian Tyacke John R. Slavik Mathew Danton Spivey Donal Botkin John Pollock Edmund Fokschaner Joseph Salomone Matthew O’Connor chuck zegar Jordan Young m0nk Hank S John Hofmann Timothy McCulloch Gamma Ray Burst Daniel Jennings Cameron Sampson Pratik Mukherjee Geoffrey Clarion Astronauticist Nate Darren Duncan Lily kawaii Russ Creech Jeremy Reed Max Bernard Bill Blair Eric Webster Steven Sartore DrJYou David Johnston J. King Michael Barton Christopher Barron James Ramsey Mr T Andrew Mann Jeremiah Johnson fieldsa eleanory Peter Mertz Kevin O’Connell Richard Deighton Isaac Suttell Devon Rosenthal Oliver Flanagan Dawn M Fink Bleys Goodson Darryl J Lyle Robert Walter Bruce B Ismael Montecel Andrew Richmond Simon Oliphant Mirik Gogri David Hughes Mark Daniel Cohen Brandon Lattin Yannick Weyns Nickolas Andrew Freeman Brian Blanchard Shane Calimlim Tybie Fitzhugh Robert Ilardi Astaurus Eric Kiebler Craig Stonaha Martin Skans Michael Conroy Graydon Goss Frederic Simon Greg Smith Sean Warniaha Tonyface John Robinson A G Kevin Lee Adrian Hatch Yurii Konovaliuk John Funai Cass Costello Geoffrey Short Bradley Jenkins Kyle Hofer Tim Stephani Luaan AlecZero Malte Ubl Nick Virtue Scott Gossett Martin J Lollar Dan Warren Patrick Sutton John Griffith Daniel Lyons DFaulk Kevin Warne Andreas Nautsch Brandon labonte Lucas Morgan.
Astronomers have detected strange “wobbles” in the light curve of a super bright supernova, hinting that a magnetar was born inside the extreme stellar explosion.
🚨 THE UNIVERSE NEVER FORGETS. NOT A SINGLE MOMENT. You burned a book. The words are gone. The pages are ash. But physics says every letter still exists — scattered across trillions of particles, encoded in the quantum state of reality. And it’s not just books. Every breath you’ve ever taken. Every word you’ve ever spoken. Every person you’ve ever lost. The information is still here. Right now. Permanently. 🔴 WHAT YOU’LL DISCOVER: 🔴 Why burning something doesn’t destroy its information. 🔴 How Stephen Hawking lost the biggest bet in physics history. 🔴 The black hole war that nearly broke quantum mechanics. 🔴 Why spacetime itself is made of information. 🔴 What this means about death — and why nothing truly disappears. ⚠️ WARNING: After this video, you will never look at destruction the same way again. Like and subscribe for more reality-breaking physics. physics, quantum mechanics, information paradox, black holes, Hawking radiation, holographic principle, entropy, universe, science, reality, quantum information, spacetime, Leonard Susskind, Stephen Hawking, ER EPR.
Sabine Hossenfelder, Ivette Fuentes and James Ladyman discuss the scaling laws of the universe and the fundamental nature of reality.
Is the universe one thing, or many things?
With a free trial, you can watch the full debate NOW at https://iai.tv/video/the-one-and-the–… central question in ancient Greek philosophy was the problem of the One and the Many. It is a question that has echoed across Western culture and is still with us today. Should we see the world as a coherent whole or a multitude of separate parts? The puzzle is that we need both the whole and the parts, but an explanation of the relationship between them has proved problematic and perhaps unknowable. In contemporary physics, the parts are the teeming world of particle physics, and these should make up the cosmological world of the universe as a whole and the overall framework of Einsteinian space-time. But as yet we have not been able to combine the two coherently. Is looking at the universe from the small scale and the large always going to be incompatible? Does it mean a theory of everything is an illusion and the attempt to combine quantum mechanics and Einstein’s general relativity a forlorn project? Or is the parallel with the ancient Greek puzzle accidental and the current challenge one that might be overcome? #quantumphysics #universe #philosophy #fundamentalunits #theoryofeverything Sabine Hossenfelder is a theoretical physicist and acclaimed science communicator, known for her sharp critiques of the scientific mainstream. She is also a best-selling author and YouTuber. Ivette Fuentes is a theoretical quantum physicist at the University of Southampton and Emmy Fellow at the University of Oxford. James Ladyman is a philosopher of science at the University of Bristol. He is best known for his book Every Thing Must Go, calling for a metaphysics grounded in physics and complexity science. Hosted by Jack Symes. 00:40 James Ladyman on the different notions of scale 02:39 Sabine Hossenfelder on energy in the universe 05:19 Ivette Fuentes on unifying quantum mechanics and general relativity 09:00 Is the universe “One” or “Many”? 17:15 Particles are not fundamental The Institute of Art and Ideas features videos and articles from cutting edge thinkers discussing the ideas that are shaping the world, from metaphysics to string theory, technology to democracy, aesthetics to genetics. Subscribe today! https://iai.tv/subscribe?utm_source=Y… For debates and talks: https://iai.tv For articles: https://iai.tv/articles For courses: https://iai.tv/iai-academy/courses.
A central question in ancient Greek philosophy was the problem of the One and the Many. It is a question that has echoed across Western culture and is still with us today. Should we see the world as a coherent whole or a multitude of separate parts? The puzzle is that we need both the whole and the parts, but an explanation of the relationship between them has proved problematic and perhaps unknowable. In contemporary physics, the parts are the teeming world of particle physics, and these should make up the cosmological world of the universe as a whole and the overall framework of Einsteinian space-time. But as yet we have not been able to combine the two coherently.
Is looking at the universe from the small scale and the large always going to be incompatible? Does it mean a theory of everything is an illusion and the attempt to combine quantum mechanics and Einstein’s general relativity a forlorn project? Or is the parallel with the ancient Greek puzzle accidental and the current challenge one that might be overcome?
A radical idea that resolves many quantum paradoxes suggests there is no objective view of reality. How can the cosmos be stitched together from interlocking perspectives?
2025 is … was the international year of quantum science and technology. Yes because quantum tech is increasingly important, but especially because quantum mechanics was invented 100 years ago this year. In 1925, our strangest true theory went from being a peculiar set of ideas to describe some funny results from experiments, to a full-blown theoretical framework that overturned how we think reality really works. So today, as the centenary year approaches its end I want to take you on a little journey through what may be the most paradigm-destroying several months in scientific history.
An exploration of the question of what happens when a back hole evaporates and ultimately what that means for the end of the universe, and what that end might be like.
What if gravity is not fundamental but emerges from quantum entanglement? In this episode, physicist Ted Jacobson reveals how Einstein’s equations can be derived from thermodynamic principles of the quantum vacuum, reshaping our understanding of space, time, and gravity itself.
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Gravitational waves are ripples in spacetime produced by violent cosmic events, such as the merging of black holes. So far, direct detections have relied on measuring tiny distance changes over kilometer-scale instruments. In a new theoretical study published in Physical Review Letters, researchers at Stockholm University, Nordita, and the University of Tübingen propose an unconventional approach: tracking how gravitational waves reshape the light emitted by atoms. The work describes a possible detection route, but an experimental demonstration remains for the future.
When atoms are excited, they naturally relax by emitting light at a characteristic frequency—a quantum process known as spontaneous emission. This happens through their interaction with the quantum electromagnetic field.
“Gravitational waves modulate the quantum field, which in turn affects spontaneous emission,” said Jerzy Paczos, a Ph.D. student at Stockholm University. “This modulation can shift the frequencies of emitted photons compared with the no-wave case.”
