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Using moon dirt with 3D printing to build future lunar colonies

Simulated lunar dirt can be turned into extremely durable structures, potentially paving the way to more sustainable and cost-effective space missions, a new study suggests. Using a special laser 3D printing method, researchers melted fake lunar soil—a synthetic version of the fine dusty material on the moon surface, called regolith simulant—into layers and fused it with a base surface to manufacture small, heat-resistant objects.

If utilized on the lunar surface, the material may help build sturdy, nontoxic habitats and tools for future astronauts, capabilities that would be vital to the NASA Artemis missions that aim to establish a long-term human presence on the moon by the end of the decade.

But to assess how well this new construction material may work in space, the team tested their fabrication process under a range of different environmental conditions, revealing that the overall quality of the material depends greatly on the surface onto which the soil is printed.

Colonizing Brown Dwarfs — Life Around Failed Stars

Colonizing brown dwarfs: habitats, megastructures, and hidden homes around failed stars. Could these dim embers power civilizations for trillions of years?

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Watch my exclusive video Lazarus Protocols: https://nebula.tv/videos/isaacarthur–… out 17 Pages: https://nebula.tv/17pages?ref=isaacar… and A Bit Obscure https://nebula.tv/abitfrank/a-bit-obs… 🛒 SFIA Merchandise: https://isaac-arthur-shop.fourthwall… 🌐 Visit our Website: http://www.isaacarthur.net ❤️ Support us on Patreon: / isaacarthur ⭐ Support us on Subscribestar: https://www.subscribestar.com/isaac-a… 👥 Facebook Group: / 1,583,992,725,237,264 📣 Reddit Community: / isaacarthur 🐦 Follow on Twitter / X: / isaac_a_arthur 💬 SFIA Discord Server: / discord Credits: Colonizing Brown Dwarfs – Life Around Failed Stars Written, Produced & Narrated by: Isaac Arthur Graphics from Fishy Tree, Jeremy Jozwik, Udo Schroeter Music Courtesy of Chris Zabriskie & Stellardrone Select imagery/video supplied by Getty Images Chapters 0:00 Intro 1:56 WHAT A BROWN DWARF IS 7:15 L Dwarfs 11:57 T-Dwarfs 17:04 Nebula 18:15 Habitable Zones 22:12 Megastructures.
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Credits:
Colonizing Brown Dwarfs – Life Around Failed Stars.
Written, Produced & Narrated by: Isaac Arthur.
Graphics from Fishy Tree, Jeremy Jozwik, Udo Schroeter.
Music Courtesy of Chris Zabriskie & Stellardrone.
Select imagery/video supplied by Getty Images.

Chapters.
0:00 Intro.
1:56 WHAT A BROWN DWARF IS
7:15 L Dwarfs.
11:57 T-Dwarfs.
17:04 Nebula.
18:15 Habitable Zones.
22:12 Megastructures

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Asteroid Spaceships: Turning Rocks into Interstellar Vehicles

Asteroids could be the ultimate spacecraft. Explore how space rocks become starships, habitats, and interstellar vessels.

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Credits:
Using Asteroids As Spaceships.
Science & Futurism with Isaac Arthur.
Episode 379, January 26, 2023
Written, Produced & Narrated by Isaac Arthur.

Editors:
Briana Brownell.
David McFarlane.
Donagh B.

Graphics by:
Fishy Tree.
Jeremy Jozwik.
Ken York.
Sergio Botero.
Udo Schroeter.

Music Courtesy of Epidemic Sound http://epidemicsound.com/creator.

Brain scans reveal link between thinner brain cortex regions and higher psychopathic traits

A team of researchers from Spain was curious to know if people with high psychopathic traits have anomalies in the brain’s physical structures, which make them incapable of feeling regret or capable of manipulation and other antisocial behavior. They conducted an experiment in which they interviewed men convicted of intimate partner violence (IPV) and a control group with no history of violence to measure their psychopathic traits, followed by brain scans.

The results showed that men with thinner cortex in certain brain regions—particularly fronto-temporo-parietal areas —tended to display higher antisocial tendencies, regardless of their history of violence.

Fronto-temporo-parietal cortex regions refer to parts of the brain’s outer layer, which houses gray matter and supports functions such as sensory processing, motor control, and higher cognitive activities. The findings further reinforce a broader idea in neuroscience that regions in these brain regions play a major role in shaping behaviors such as callousness, a lack of empathy, and manipulative tendencies.

How AI could unlock deep-sea secrets of marine life

The reef is a home and feeding ground for dozens of species that depend on it the way a woodland creature depends on trees. It has survived ice ages – but whether it will survive increasing pressures from industrial fishing, deep-sea mining and climate change is, in part, a question about data. If we don’t know it exists, how can we protect it?

A new project called Deep Vision could fundamentally transform our understanding of the deep ocean by digging into pictures and videos sat largely unexamined in research archives around the world. By using AI, thousands of hours of seafloor footage can be analysed to produce the first comprehensive maps of vulnerable marine ecosystems across the entire Atlantic basin.

Over the past two decades, robotic and autonomous underwater vehicles have collected vast quantities of footage from the deep sea. This represents an extraordinary resource – a record of ecosystems that most humans will never see.

Caretaker AI & Genius Loci: When Worlds Grow Minds of Their Own

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

Life on Generation Ships: A Journey Through the Stars Across Centuries

In this video, we explore one of the most fascinating concepts in interstellar travel: **generation ships**, massive spacecraft that would carry human civilizations across the stars, with journeys lasting hundreds or even thousands of years. As humanity dreams of traveling beyond the solar system, the idea of generation ships offers a possible solution to the immense distances between stars—a journey that could span multiple human lifetimes.

Join us as we dive deep into the science, challenges, and philosophical questions surrounding these massive space-faring habitats.

What you’ll learn in this video:

**The Structure and Design of a Generation Ship**: Discover how these spacecraft could be built to support life for centuries, from creating artificial gravity to maintaining a self-sustaining ecosystem. We’ll explore the futuristic technologies, such as nuclear fusion engines and advanced life support systems, that could make these ships possible.

**Daily Life Aboard a Generation Ship**: What would day-to-day life look like on a ship traveling through deep space for centuries? We’ll talk about the work, education, and entertainment that would keep future generations engaged. How would people handle the psychological strain of never seeing Earth or their final destination?

**Society and Governance**: How would politics and society evolve in the isolated, confined world of a generation ship? We explore the potential for new social structures, systems of governance, and the ethical dilemmas surrounding generations born aboard who may have never chosen this life.

Closing in on a universal vaccine: Nasal spray protects mice from respiratory viruses, bacteria and allergens

In the realm of medical advancements, a universal vaccine that can protect against any pathogen has long been a Holy Grail—and about as elusive as a mythological vessel. But Stanford Medicine researchers and collaborators have taken an astonishing step forward in that quest, surprising even themselves.

In a new study in mice, they have developed a universal vaccine formula that protects against a wide range of respiratory viruses, bacteria and even allergens. The vaccine is delivered intranasally—such as through a nasal spray—and provides broad protection in the lungs for several months.

In the study, published in Science, researchers show that vaccinated mice were protected against SARS-CoV-2 and other coronaviruses, Staphylococcus aureus and Acinetobacter baumannii (common hospital-acquired infections), and house dust mites (a common allergen).

Cryogenic Arks — Sleeping Through the Ages

From frozen habitats to millennia-long journeys, we explore the science behind cryogenic arks and deep-time interstellar travel.

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Credits:

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