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Designing a Generational Ship (Proxima Centauri b)

To build a Proxima Centauri b generational ship; designed to protect the life aboard during the 100 year journey from Earth; designed to build the first structures of the settlement on the surface of the new planet.

✧ Find me on Substack where I write sci-fi story essays: J.Barry / Between Worlds.
https://jbarrybetweenworlds.substack… The fourth volume of ‘The Encyclopedia of the Future’ is now available on my Patreon. / shop ✧ The Garden Telescope (and Other Short Stories) Ebook is also available to Patreon members, or as a single purchase download Visit my Patreon here: / venturecity Created by: J. Barry — Book recommendations on artificial intelligence, future technology and innovations, and sci-fi stories (affiliate links): • Superintelligence: Paths, Dangers, Strategies https://amzn.to/3j28WkP • Life 3.0: Being Human in the Age of Artificial Intelligence https://amzn.to/3790bU1 • The Expanse: https://amzn.to/3Q0mG61 • The Hitchhikers Guide to the Galaxy: https://amzn.to/3kNFSyW — Other videos to watch: 1. The 100 Year Journey to Proxima Centauri b • The 100 Year Journey to Proxima Centauri B… 2. The First 10,000 Days on Proxima Centauri b • The First 10,000 Days on Proxima Centauri… 3. TIMELAPSE of Future Space Stations • TIMELAPSE of Future Space Stations.
✧ The fourth volume of ‘The Encyclopedia of the Future’ is now available on my Patreon.
/ shop.
✧ The Garden Telescope (and Other Short Stories) Ebook is also available to Patreon members, or as a single purchase download.

Visit my Patreon here: / venturecity.

Created by: J. Barry.

Book recommendations on artificial intelligence, future technology and innovations, and sci-fi stories (affiliate links):
• Superintelligence: Paths, Dangers, Strategies https://amzn.to/3j28WkP
• Life 3.0: Being Human in the Age of Artificial Intelligence https://amzn.to/3790bU1
• The Expanse: https://amzn.to/3Q0mG61
• The Hitchhikers Guide to the Galaxy: https://amzn.to/3kNFSyW

Other videos to watch:

Continue reading “Designing a Generational Ship (Proxima Centauri b)” | >

Solar Storm Unexpectedly Reduces Cosmic-Ray Flux

A solar storm hitting Earth appears to have reduced the amount of incoming high-energy cosmic rays, suggesting a new way of measuring solar activity.

Solar activity has a well-known impact on the flux of low-energy cosmic rays that strike Earth. Now researchers have detected a solar-storm-induced change in the flux of higher-energy cosmic rays [1]. Using data from a large detector array in China, the team measured a decrease—over several hours—in cosmic-ray showers coming from a particular direction in the sky. The timing of this anisotropy suggests that cosmic rays heading into the outward-moving storm were preferentially scattered by the storm’s magnetic fields. The results could lead to a new way to study the magnetic structures in solar storms.

The solar wind—the spray of charged particles continually emitted by the Sun—partially shields Earth and other planets from cosmic rays that stream into the Solar System from all directions. The wind contains magnetic fields that help deflect the high-energy protons and other particles that make up the cosmic rays. In 2024, when the wind was at the peak in its 11-year cycle, the flux of cosmic rays was down by about 0.5% compared to the average.

Ultraluminous X-ray source in Whale galaxy investigated for spectral and timing variability

Astronomers from Germany and Turkey have analyzed available data from various space telescopes to investigate an ultraluminous X-ray source designated X-4, which is located in the nearby galaxy NGC 4631. Results of the new study, published June 22 on the preprint server arXiv, yield important insights into the spectral and timing variability of this source.

Ultraluminous X-ray sources (ULXs) are point sources in the sky that are so bright in X-rays that each emits more radiation than a million suns emit at all wavelengths. They are less luminous than active galactic nuclei but more consistently luminous than any known stellar process. Although numerous studies of ULXs have been conducted, the basic nature of these sources remains unknown.

The Ethics of Transhumanism — Dreaming of More, Without Losing What We Are

Transhumanism promises a better humanity—or perhaps something no longer human at all. Join us as we explore the moral dilemmas and future paths of human augmentation.

Watch my exclusive video Mass Drivers on the Moon: https://nebula.tv/videos/isaacarthur–… Nebula using my link for 40% off an annual subscription: https://go.nebula.tv/isaacarthur Get a Lifetime Membership to Nebula for only $300: https://go.nebula.tv/lifetime?ref=isa… Use the link https://gift.nebula.tv/isaacarthur to give a year of Nebula to a friend for just $36. 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: The Ethics of Transhumanism July 17, 2025; Episode 740 Written, Produced & Narrated by: Isaac Arthur Editor: Donagh Broderick Select imagery/video supplied by Getty Images Music Courtesy of Epidemic Sound http://epidemicsound.com/creator Stellardrone, “Red Giant”, “Billions and Billions” Taras Harkavyi, “Alpha and…” Chapters 0:00 Intro 1:36 The Promise and Peril of Transhumanism 3:56 Origins of Transhumanism 9:07 Subjective vs. Objective Improvements – Where Do We Draw the Line? 10:58 Nature and Morality – Three Views of Natural Law 13:03 The Road Ahead – What Does It Mean to Be Human? 14:35 The Moral Case for Transhumanism 18:01 The Risks & Dangers of Transhumanism 27:07 Navigating the Ethical Landscape — How Do We Proceed? 32:47 The Transhuman Future: Utopia, Dystopia, or Something Else? 33:57 Final Reflections: What Does It Mean to Be Human?
Get Nebula using my link for 40% off an annual subscription: https://go.nebula.tv/isaacarthur.
Get a Lifetime Membership to Nebula for only $300: https://go.nebula.tv/lifetime?ref=isa…
Use the link https://gift.nebula.tv/isaacarthur to give a year of Nebula to a friend for just $36.

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…
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Credits:
The Ethics of Transhumanism.
July 17, 2025; Episode 740
Written, Produced \& Narrated by: Isaac Arthur.
Editor: Donagh Broderick.
Select imagery/video supplied by Getty Images.
Music Courtesy of Epidemic Sound http://epidemicsound.com/creator.
Stellardrone, \

Trios of quantum particles form checkerboard layouts when particle density hits sweet spot

Trions form when three particles, like quarks or electrons, come together. This formation occurs in quantum particles in nuclear physics, semiconductors and magnets, and understanding its behavior can be challenging. Rice University’s Kaden Hazzard and his team recently developed a theory on how these formations occur and behave, which was published in Physical Review Letters.

“Our theory sheds light on how trions form and interact with each other,” said Hazzard, associate professor of physics and astronomy and corresponding author on the paper. “It predicts the strength of the interactions needed to form the trions, and that, after formation, they arrange themselves in a checkerboard pattern.”

If you imagine a space full of equal amounts of red, blue and yellow balls, a trion would form when a red, blue and yellow ball all stuck to each other, Hazzard explained. Once all the balls, or particles, are bound together, he was curious about how these trions would arrange themselves in space.

Ancient stellar flyby may still be steering long-period comets today

The Gaia mission has allowed researchers to understand the motions of stars like never before, even revealing possible interactions between our solar system and nearby stars. Planetary Science Institute Senior Scientist Nathan Kaib and collaborator Sean Raymond (Universite de Bordeaux) have found that a recent stellar passage likely triggered a huge increase in comet formation as the star’s gravity altered Oort cloud objects’ orbits, sending them cascading into the inner solar system. We may even still be feeling the effects of this passage today. This work is being presented at the American Astronomical Society Division on Dynamical Astronomy.

HD 7,977 is a nearby sun-like star in the constellation Cassiopeia whose close passage was discovered by the Gaia mission. Approximately 2.5 million years ago, the orbits of the sun and HD 7,977 brought the two stars close together, but exactly how close is still an open question. Gaia data suggest they passed within 4,000–25,000 astronomical units of one another. Now, Kaib and Raymond have shown that the orbits of long-period comets suggest HD 7,977 came within 6,000–10,000 AU of our sun, setting off a major shower of new comets into the inner solar system.

Nanotechnology: A New Frontier

Nanotechnology Explained.
Start learning today for FREE: http://brilliant.org/aperture.
Follow me on Instagram!: / mcewen.

Nanotechnology is ironically becoming larger by the day, but not literally. As a field, Nanotechnology impacts each and every one of us more every single day. What is Nanotechnology? Why should you care about it? Well, I have a few reasons.

Stay connected with Aperture:
Join the community Discord!: / discord.
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📖 Some of my favorite books:

Pale Blue Dot: A Vision of the Human Future in Space by Carl Sagan.
https://amzn.to/2T7YmAZ

A Universe from Nothing by Lawrence M. Krauss:

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Laser experiments push helium to record shock pressures

Deep inside gas giants like Jupiter and Saturn, hydrogen and helium coexist under pressures millions of times greater than Earth’s atmosphere. Under those conditions, helium may separate from hydrogen and influence a planet’s internal heat flow, structure and magnetic field. Understanding these processes and how these materials behave under extreme conditions is essential to building accurate models of planetary evolution.

New experimental results, published in Physical Review Research, reveal the behavior of helium at unprecedented pressures. The research, conducted by scientists at Lawrence Livermore National Laboratory (LLNL), the University of California, Berkeley, the French Commissariat à l’Énergie Atomique et aux Energies Alternatives (CEA) and the University of Rochester’s Laboratory for Laser Energetics (LLE), shows that helium behaves differently from what most broad-range theoretical models predicted.

Scientists catch classical space-time crystals moving like Majorana quasiparticles

A research team from Hiroshima University, the University of Colorado, and other collaborators have demonstrated that space-time crystals—exotic structures that, under external drive, loop endlessly through both space and time—can be created using everyday liquid-crystal materials.

For the past decade, physicists have been fascinated by time crystals. Unlike normal crystals (such as salt or diamonds), which have repeating molecular patterns in space, time crystals have patterns that repeat at regular intervals in time. Previously, scientists believed these bizarre structures could exist only in highly complex, fragile quantum systems at near-absolute-zero temperatures, such as trapped ions or quantum simulators. However, in a collaborative study published in Nature Communications, researchers successfully created them in a classical, room-temperature liquid-crystal system.

To achieve this, the team took a liquid-crystal material—similar to the fluid used in smartphones and television screens—and doped it with ionic substances. They then applied a rhythmic, repeating electrical signal to the fluid. Using advanced computer models and optical microscopes, the researchers observed a surprising phenomenon known as period-doubling. Even though the electrical drive pumped energy into the fluid at a set internal rhythm, the liquid crystals spontaneously locked into a pattern that repeated only every two cycles of the electricity.

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