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The time ‘rondeau’ crystal: Scientists observe a new form of temporal order

In a new study published in Nature Physics, researchers achieved the first experimental observation of a time rondeau crystal—a novel phase of matter where long-range temporal order coexists with short-time disorder.

Named after the classical musical form where a repeating theme alternates with contrasting variations (like Mozart’s Rondo alla Turca), the time rondeau crystal exhibits perfectly periodic behavior at specific measurement times while showing controllable random fluctuations between those intervals.

“The motivation for this research stems from how order and variation coexist across art and nature,” explained Leo Moon, a third-year Applied Science and Technology Ph.D. student at UC Berkeley and co-author of the study. “Repetitive periodic patterns naturally arise in early art forms due to their simplicity, while more advanced music and poetry build intricate variations atop a monotonous background.”

Doomsday Devices & Ontological Weaponry

From nuclear nightmares to reality-breaking weapons, we examine how science and fiction imagine the end of everything. What happens when weapons don’t just destroy worlds but unmake reality itself? Explore the science of apocalypse.

Checkout Scav: https://go.nebula.tv/scav?ref=isaacar… Watch my exclusive video Autonomous Space Industry: https://nebula.tv/videos/isaacarthur–… Nebula using my link for 40% off an annual subscription: https://go.nebula.tv/isaacarthur Visit our Website: http://www.isaacarthur.net Join Nebula: https://go.nebula.tv/isaacarthur Support us on Patreon: / isaacarthur Support us on Subscribestar: https://www.subscribestar.com/isaac-a… Facebook Group: / 1,583,992,725,237,264 Reddit: / isaacarthur Twitter: / isaac_a_arthur on Twitter and RT our future content. SFIA Discord Server: / discord Credits: Doomsday Devices & Ontological Weaponry Written, Produced & Narrated by: Isaac Arthur Editor: Lukas Konecny Select imagery/video supplied by Getty Images Music by Epidemic Sound: http://nebula.tv/epidemic & Stellardrone Chapters 0:00 Intro 1:30 Classical Doomsday Devices 5:57 Cosmic-Scale Doomsday Devices 11:30 Ontological Weaponry – Breaking Reality 12:23 The Erasers of History 16:06 Weapons of Physics Editing 17:55 Mind and Meaning as Targets 20:06 Scavenger Hunt 21:30 Themes and Consequences 22:55 Practical Considerations & Paradoxes 24:07 Doomsday Devices vs. Ontological Weapons 26:48 The Fermi Paradox & Ultimate Destruction.
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Get Nebula using my link for 40% off an annual subscription: https://go.nebula.tv/isaacarthur.

Visit our Website: http://www.isaacarthur.net.
Join Nebula: https://go.nebula.tv/isaacarthur.
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SFIA Discord Server: / discord.
Credits:
Doomsday Devices & Ontological Weaponry.
Written, Produced & Narrated by: Isaac Arthur.
Editor: Lukas Konecny.
Select imagery/video supplied by Getty Images.
Music by Epidemic Sound: http://nebula.tv/epidemic & Stellardrone.

Chapters.
0:00 Intro.
1:30 Classical Doomsday Devices.
5:57 Cosmic-Scale Doomsday Devices.
11:30 Ontological Weaponry – Breaking Reality.
12:23 The Erasers of History.
16:06 Weapons of Physics Editing.
17:55 Mind and Meaning as Targets.
20:06 Scavenger Hunt.
21:30 Themes and Consequences.
22:55 Practical Considerations & Paradoxes.
24:07 Doomsday Devices vs. Ontological Weapons.
26:48 The Fermi Paradox & Ultimate Destruction.

[SCRUBBED] Watch Blue Origin Launch New Glenn to Mars!

Blue Origin’s is launching their second New Glenn rocket, for mission NG-2, from Launch Complex 36 at Cape Canaveral Space Force Station. It will deploy NASA’s ESCAPADE twin spacecraft to study Mars’ magnetosphere and solar wind interactions, alongside a Viasat communications technology demonstration. Blue Origin is planning to propulsively land the booster down range.

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Interactive web tool brings quantum game theory concepts to life through music

A new interactive web application allows for a tangible understanding of abstract concepts of quantum game theory. The Kobe University development parallels the emergent dialog found in jazz and improvisational music and aims for a scientific exploration of creativity.

For many of us, , game theory and jazz are difficult concepts by themselves, and it is hard to imagine how they would combine. But Kobe University quantum engineer Souma Satofumi posits that not only can they fruitfully interact, but their combination also provides new avenues to understanding each of them.

Through creating the world’s first browser-based interactive music system based on quantum game theory, users are able to obtain visual and on how their respective strategies intertwine based on their inputs in what resembles a quantum jam session.

Caretaker AI & Genus Loci

Meet the caretaker AIs: guardians of planets, habitats, and civilizations. What happens when machines become the spirit and soul of the worlds they protect?

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Credits:
Caretaker AI & Genus Loci 2025 Edition.
Written, Produced & Narrated by: Isaac Arthur.
Editors: Ludwig Luska.
Graphics:
Bryan Versteeg.
Jeremy Jozwik.
Ken York YD Visual.
Kris Holland Mafic Studios.
Select imagery/video supplied by Getty Images.
Music Courtesy of Epidemic Sound http://epidemicsound.com/creator

Music of the Spheres and the Lessons of Pythagoras

I. Using simple mathematics, Pythagoras was able to describe the basis of almost all musical scales, including the pentatonic, the Western, the chromatic and the Arabic scales. This shows the power and excitement of science. For the first time, Pythagoras could answer the question, WHY? Why are these notes and scales special? The answer is that they are formed in a simple, systematic, and mathematical manner. Most importantly, Pythagoras showed that the notes are not random or arbitrary and that they could be understood on a deeper level.

II. Pythagorass discoveries bring up a deeper psychology question: scales were first developed by ear: we and the Neanderthals choose these particular notes before there was any understanding of mathematics or physics. The notes were chosen simply because they were pleasing to the ear. But, as it turns out, the scales also follow basic mathematical constructs. So the question is, what does this say about our likes and emotions? Is there a mathematical/physical basis to them, as well?

III. The power of spectroscopy. What Pythagoras did was look a physical system (the musical scale), found characteristic frequencies (pitches/notes) and found simple mathematical relationships between the frequencies (ratios of 3/2, for example). This process actually became a fundamental part of physics, and modern physics, in particular.

From stiff to soft in a snap: Magnetic jamming opens new frontiers for microrobotics

Could tiny magnetic objects, that rapidly clump together and instantly fall apart again, one day perform delicate procedures inside the human body? A new study from researchers at the Max Planck Institute for Intelligent Systems in Stuttgart and at ETH Zurich introduces a wireless method to stiffen and relax small structures using magnetic fields, without wires, pumps, or physical contact.

In music, “jamming” refers to the spontaneous gathering of musicians who often improvise without aiming for a predefined outcome. In physics, jamming describes the transition of a material from a fluid-like to a solid-like state—like a traffic jam, where the flow of cars suddenly stops. This transformation can also be triggered on demand, offering a powerful and versatile way to control stiffness for .

In most robotic applications, jamming is achieved using vacuum systems that suck air out of flexible enclosures filled with materials such as particles, fibers, or grains. But these systems require pumps, valves, and tubing—making them difficult to miniaturize.

Shall we Dance in Free-Space? a Choice of Freedom!

Humanity stands at a crossroads. Our beautiful Earth, cradle of all we know, is straining under the weight of nearly 8.5 billion people. Environmental degradation, social inequity, and resource scarcity deepen by the day. We are reaching the limits of a single-planet civilization. We can face this challenge in two ways. Some will cling to the old patterns—fighting over dwindling resources and defending narrow borders. Others will rise above, expanding into space not to escape Earth, but to renew and sustain it. These pioneers—the Space Settlers —will carry the next chapter of civilization beyond our home planet.

The Humanist Path: Living in Free Space. When people imagine living beyond Earth, they often picture Lunar or Martian colonies. Yet, from a humanist perspective, a better path exists: rotating free space habitats, as envisioned by Gerard K. O’Neill. These are vast, spinning structures orbiting Earth or the Moon, or standing at Lagrange Libration Points, designed to simulate Earth’s gravity and sustain full, flourishing communities. Unlike planetary colonies bound to weak gravity, dust, or darkness, O’Neill habitats offer: 1g simulated gravity to preserve human health; continuous sunlight and abundant solar energy; freedom of movement, as habitats can orbit safely or relocate if needed. More than technical achievements, these habitats embody the Enlightenment spirit—the belief that reason, ethics, and creativity can design environments of dignity, beauty, and freedom.

Freedom and Human Dignity in Space. Freedom is at the heart of humanity’s destiny. Consider a lunar settler who finds his bones too fragile to withstand Earth’s gravity—trapped by biology, after a few years living on the Moon. In contrast, inhabitants of a rotating habitat retain the freedom to return on Earth, at will. Simulated gravity safeguards their health, ensuring that space settlement remains reversible and voluntary. Freedom of movement leads naturally to freedom of culture. In a habitat like “New Gaia”, thousands of people from all nations live together: Russians celebrating Maslenitsa, Indians lighting Diwali lamps, and space-born storytellers sharing ancient myths. New traditions also emerge—festivals, music, and art inspired by life between worlds. These habitats can become beacons of a new Renaissance —a rebirth of cultural and creative freedom beyond the constraints of geography and politics.

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