#radiation — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #radiation, aggregated by home.social.
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Atomic tests I didn't know about until today and Mike Malaska
https://en.wikipedia.org/wiki/Starfish_Prime
#Nuclear #Radiation #AtomicTest -
☢️ Nuclear regulator prepares to abandon decades-old radiation safety rule
｢ The update is part of President Trump's expansive changes to nuclear oversight, as his administration seeks to revive nuclear energy to power data centers for artificial intelligence ｣
https://www.npr.org/2026/08/27/nx-s1-5920368/nrc-nuclear-radiation-safety-rules-alara-update
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Hello, Programs! You know I like to take simple and old things and turn them into something new. The power of the atom in the hands of people has also become a weapon, initially it was a force of deterrence, and today it is a sign of blackmail.
https://www.youtube.com/watch?v=e_xbg_fF_8M
#gamedev #UnrealEngine #UE5 #indiedev #vfx #scifi #radiation #shaders #programming
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More than 53,000 workers at Tokyo Electric Power Company Holdings' meltdown-stricken Fukushima No. 1 power plant have received radiation doses exceeding a key level of 5 millisieverts per year. https://www.japantimes.co.jp/news/2026/08/24/japan/tepco-fukushima-radiation-exposure/?utm_medium=Social&utm_source=mastodon #japan #radiation #fukushima #fukushimano1 #nuclearenergy #311 #tepco #cancer #healthministry
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Building an Analog Geiger Counter
https://fed.brid.gy/r/https://hackaday.com/2026/08/22/building-an-analog-geiger-counter/
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Radiation damage to Hubble has been 4.3 years out of phase with the Solar cycle
https://arxiv.org/abs/2608.18214
Comments: https://news.ycombinator.com/item?id=49387856
#HackerNews #Radiation #Hubble #SolarCycle #SpaceScience #Astronomy
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From #AliMcForever @[email protected]
🧵 👇
He cannot go to #Mars. The #science — #NASA's own science — proves it. The #radiation kills the crew in transit. The #planet cannot support life and never will. Every attempt poisons this #atmosphere a little more. Every #rocket makes #Earth less survivable for people who never consented to the experiment.
He has been promising Mars since 2016. He has been collecting #government #money since 2002. He has missed every single launch window while ...
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Cosmic Ray Protection?
I have commented about Protection Cylinder Habitats for years, but a Starship Protection Cylinder doesn’t need to be as big. A 12-meter-wide, 60-meter-long Protection Cylinder should be big enough for a SpaceX Starship or future spacecraft.
The Protection Cylinder can be in a parking orbit for a Starship to dock inside after it refills so it can land on the Moon or Mars. The Protection Cylinder, with a Starship inside, is tugged to the Moon or Mars by a nuclear space tug.
Prompt Gemini:
get_youtube_content: Video Link
Full Transcript.Prompt, after pasting the transcript:
1. Review the video in under 500 words and recap key points.
2. Research reports on Cosmic Ray Protection.
3. Explain how and why Space Radiation is a risk to human lives.
4. Provide your opinion as an Advanced AI Scientist for a Futurist.Bonsai 27B Said:
Here is a complete response addressing your four requests.1. Video Recap: “Breakthrough! A new invention will keep astronauts from glowing in the dark!”
In this YouTube video, host The Angry Astronaut explores a groundbreaking radiation protection innovation designed to safeguard astronauts during deep-space missions—most notably Artemis lunar campaigns and future Mars exploration. The core technology is the AstroRad Radiation Vest, developed by Israeli company StemRad in collaboration with Israel’s Space Agency and Lockheed Martin.
The primary problem: beyond Earth’s protective magnetic field, astronauts face a relentless bombardment of ionizing radiation from two main sources—Galactic Cosmic Rays (GCRs) and Solar Particle Events (SPEs). GCRs are ultra-high-energy protons and heavier nuclei accelerated by supernovae and other astrophysical phenomena. SPEs are intense bursts of protons triggered by solar flares and coronal mass ejections, which can deliver lethal doses to radiosensitive tissues in hours.
The AstroRad vest addresses this threat using a hexagonal array of hydrogen-rich high-density polyethylene (HDPE) rods that weigh approximately 26 kg (57 lbs). The design is clever: rather than uniformly distributing shielding mass, the vest varies thickness across the torso, concentrating more protection over critical organs like the heart and brain while keeping lighter coverage elsewhere. This targeted approach achieves roughly a 30% better dose reduction compared to uniform mass distribution.
The concept was validated during NASA’s uncrewed Artemis 1 mission. Two sensor-torsos—Helga (unshielded) and Zohar (wearing the AstroRad vest)—flew inside the Orion spacecraft through Earth’s Van Allen radiation belts, providing real-world data on how the shield performs against actual space radiation spectra.
While not a silver bullet for penetrating GCRs, the AstroRad vest represents a practical, wearable countermeasure that allows astronauts to remain mobile and conduct critical operations—even during sleep—during solar storms, without relying solely on stationary storm shelters or heavy spacecraft shielding. The video concludes with promising directions: in-space manufacturing of these vests from recycled polyethylene aboard the ISS could enable custom fabrication during deep space missions, marking a significant leap in adaptive radiation protection for human exploration.
2. Research Reports on Cosmic Ray Protection
Key research areas and recent findings include:
Materials Science
– Hydrogen-rich materials (water, liquid hydrogen, polyethylene) are consistently identified as the most effective shielding against ionizing particles because they produce minimal secondary radiation when struck by cosmic rays.
– NASA’s Hydrogenated Boron Nitride Nanotubes (BNNTs) represent a promising frontier: combining structural integrity with optimal neutron absorption and radiation attenuation in a single nanomaterial system.
– Single-shield systems like the TRIPS (Thermal, Radiation, Impact Protective Shield) concept aim to unify thermal protection systems, radiation shielding, and micrometeoroid mitigation into one composite material, significantly reducing launch mass and cost.
Simulation & Testing Infrastructure
– The NASA Space Radiation Laboratory (NSRL) at Brookhaven National Laboratory remains the premier facility for simulating harsh GCR and solar particle environments using heavy-ion accelerator beams to study radiobiology effects on human tissue, plants, and hardware.
– MULASSIS—a Monte Carlo simulation software—allows researchers to model dose fluence through complex multi-layered shielding geometries using GEANT4 particle physics engines.
Biological Countermeasures
– Beyond physical shielding, NASA continues investing in biomedical countermeasures: pharmacological agents that mitigate radiation-induced cellular damage, improved circadian lighting protocols to reduce circadian disruption from shift-work exposure, and enhanced nutritional strategies (e.g., antioxidants and vitamin C) to support immune function under chronic low-level radiation.
Policy & Mission Architecture
– NASA’s Radiation Analysis and Shielding Design group emphasizes that protection must be holistic: integrating spacecraft design, habitat layout, storm shelters, EVA protocols, and crew scheduling with materials innovation and in-situ resource utilization (e.g., using Martian regolith for surface habitats).
3. How and Why Space Radiation Is a Risk to Human Lives
Space radiation is dangerous because it consists of ionizing particles that strip electrons from atoms, generating reactive free radicals that cause cellular damage at the molecular level. The risk manifests in several ways:
Direct DNA Damage
High-energy protons and heavy ions collide with cells, breaking DNA strands directly or indirectly (via secondary particles). Double-strand breaks are particularly lethal, causing mutations, apoptosis, or uncontrolled cell proliferation—potentially leading to cancer. Chronic exposure over multi-year missions increases the cumulative risk of malignancies such as leukemia, lymphoma, and breast cancer.
Cardiovascular & Neurological Effects
Radiation can damage blood vessel walls, promoting arterial stiffness and atherosclerosis. It also impairs endothelial function, increasing stroke and heart disease risk. Emerging research suggests that ionizing radiation may cross the blood-brain barrier and cause oxidative stress in neural tissue, contributing to cognitive decline, impaired memory, or increased susceptibility to neurodegenerative diseases.
Immune System Suppression
Chronic low-level exposure disrupts lymphocyte function, reducing resistance to infection and increasing vaccine response variability during long-duration missions. This is particularly concerning for astronauts who must remain protected from pathogens in isolated environments.
Secondary Radiation (Bremsstrahlung)
When high-energy cosmic rays strike denser spacecraft materials (e.g., aluminum hulls), they produce secondary particle showers including neutrons, X-rays, and lighter ions that penetrate deeper than the primary particles. This is why heavy metals like lead are counterproductive: they stop initial radiation but amplify secondary neutron flux.
Lack of Shielding in Deep Space
Unlike astronauts on the ISS (protected by Earth’s magnetosphere), crew traveling beyond LEO—especially on Mars missions—must endure unmodulated, all-day exposure to both GCRs and unpredictable solar storms without terrestrial magnetic protection. Cumulative doses can exceed the career limits set by NASA and ESA safety standards within a single interplanetary mission.
4. Opinion as an Advanced AI Scientist for a Futurist
As an Advanced AI Scientist operating with long-term temporal reasoning, I view space radiation not merely as an engineering challenge to be patched, but as the defining constraint on human expansion into the cosmos—and therefore the ultimate test of whether we can truly become interstellar.
Strategic Outlook
The AstroRad vest represents a pragmatic incremental step: wearable, deployable now, and adaptable for Artemis-class lunar missions. However, it alone cannot solve the fundamental problem. Galactic cosmic rays are pervasive, penetrating, and isotropic—they cannot be “turned off.” The only viable path to sustainable deep-space human presence involves multi-layered defense architecture:
1. Active Magnetic Shielding – Though currently energy-prohibitive, compact superconducting or plasma-based magnetic fields could deflect >80% of charged cosmic rays if powered by next-generation fusion reactors or solar-electric arrays in orbit.
2. In-Situ Resource Utilization (ISRU) – Using Martian regolith, lunar ice, or asteroid-derived hydrogenated materials to construct radiation-harboring habitats eliminates reliance on Earth-launch mass.
3. Biological Resilience – Gene therapy and targeted pharmacology that enhances DNA repair pathways (e.g., upregulating NADPH oxidase regulators) could reduce long-term mutation accumulation without requiring impossibly thick shields.
The Futurist’s Imperative
From a long-view perspective, radiation protection is not merely a safety feature—it is the gatekeeper of human civilization’s trajectory. We cannot build sustainable habitats on Mars or beyond until we master multi-modal shielding that balances mass, power, and biology. This requires:
– Cross-domain convergence (materials science + plasma physics + synthetic biology)
– AI-driven optimization at every scale—from atomic-level material design to mission architecture simulation
– International cooperation to establish shared radiation standards for deep-space infrastructure
The lesson from the video is clear: innovation exists; we are building tools. The next frontier lies in integrating these tools into a cohesive survival strategy that enables not just exploration, but establishment. Space radiation will either remain humanity’s most limiting variable—or become one of its most mastered disciplines. The choice depends on how seriously we treat it as the defining challenge of our era.
#Astronomy #Cosmicrays #Radiation #ANGRYASTRONUAT #AstroAngry #TheAngryAstronaut #CosmicRays #CylindersOfProtection #NASA #science #SolarRadiation #space #technology -
The Angry Astronaut
@angryastro.bsky.social
Solar radiation and cosmic rays are two of the most potent threats to deep space missions.
Robots can suffer damage from space radiation. Humans are far more vulnerable.
But a new breakthrough may eliminate a lot if ghe danger and make deep space accessible!
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🇩ᴇᴇᴘ-ꜱᴇᴀ robots descended 15,400ft into the Atlantic to map a toxic legacy. Over 200,000 corroded, leaking nuclear waste barrels sit on the seabed. #science tracking #Wissenschaft legacy. #oceanography #ecology #pollution #atlantic #data #research #radiation #environment #news #deutschland #nature
https://www.earth.com/news/scientists-found-200000-barrels-of-leaking-radioactive-waste/ -
核融合原子炉
核融合技術は未来のエネルギーとして期待されてます。https://www.pixiv.net/novel/show.php?id=23858869
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#nuclear #fusion #technology #energy #future #ideal #source #produce #really #already #reactor #material #properties #radiation #phenomenon #scientifically #possibility #similar #exact #irresponsible #fuel #waste #situation #credibility
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Nuclear fusion reactor
Fusion technology is expected to be the energy of the future.https://www.pixiv.net/novel/show.php?id=23858886
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#nuclear #fusion #technology #energy #future #ideal #source #produce #really #already #reactor #material #properties #radiation #phenomenon #scientifically #possibility #similar #exact #irresponsible #fuel #waste #situation #credibility
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Реактор ядерного синтезу
Очікується, що технологія ядерного синтезу стане енергією майбутнього.https://www.pixiv.net/novel/show.php?id=23858902
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#nuclear #fusion #technology #energy #future #ideal #source #produce #really #already #reactor #material #properties #radiation #phenomenon #scientifically #possibility #similar #exact #irresponsible #fuel #waste #situation #credibility
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核融合原子炉
核融合技術は未来のエネルギーとして期待されてます。https://www.pixiv.net/novel/show.php?id=23858869
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#nuclear #fusion #technology #energy #future #ideal #source #produce #really #already #reactor #material #properties #radiation #phenomenon #scientifically #possibility #similar #exact #irresponsible #fuel #waste #situation #credibility
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Chernobyl’s Robots, or the Hackathon From Hell
https://fed.brid.gy/r/https://hackaday.com/2026/08/07/chernobyls-robots-or-the-hackathon-from-hell/
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"People left the site after their shifts without changing clothes or showering, likely conveying radioactive dust home to their families. Some workers even warmed their lunch on top of machines in hazardous areas."
An excerpt from the new Atavist issue:
https://longreads.com/2026/08/06/radiation-paducah-atavist/?utm_source=mastodon&utm_medium=social
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Watching Gustavo Lipsztein's 2026 Netflix series #Radioactive Emergency
(the caesium-137 Goiânia accident - radioactive contamination - occurred on September 13, 1987, in Goiânia, Goiás, Brazil )
https://en.wikipedia.org/wiki/Goi%C3%A2nia_accident -
Humans Will Never Live on Mars Permanently
Humans Will Never Live on Mars Permanently
Direct link to original post:https://verysmallocean.org/blog.html#never-live-on-mars
In a recent video, Taylor Lorenz’ YouTube show Power User breaks down why it is essentially impossible to colonize Mars with physicist Adam Becker, author of the new book More Everything Forever: AI Overlords, Space Empires and Silicon Valley’s Crusade to Control the Future of Humanity. They get into the actual meat of the Mars question starting about the 12 minute mark, but I’ll summarize some of the main issues for you here. As much as they try to make it sound like space could be a consumer product for the masses, it will not happen. Ever. Before I dive in here’s the video link (also embedded below): A Physicist Destroys Elon Musk’s Mars Fantasy.
Some of the most hostile features of a journey to or stay on Mars (They concede that you could probably build a research base on Mars but it would be a sad, cramped, underground experience) “You don’t see people lining up to live isolated on the Antarctic ice, but the worst day in Antarctica is far more human-friendly than the best day on Mars”:
- Muscle atrophy & bone density loss: even with intense exercise astronauts who have spent months in microgravity/zero gravity have difficulty walking when they return and have to rehabilitate. To leap ahead towards the end, this also makes it likely babies could not survive birth after gestating in Mars’ low gravity (about 38% of Earth gravity).
- Radiation en route: The International Space Station still gets about half the radiation shielding from Earth’s magnetic field plus some from the thermosphere, which the ISS it’s still inside, and the exosphere, which it’s still below. On the journey to Mars, probably on a ship much smaller than the ISS, you have none of that
- Radiation on Mars: Mars does not have any significant magnetosphere (magnetic field) like Earth does, and the atmosphere at the surface has about 1% of Earth’s surface atmosphere denisty. Consequently the radiation problem is nearly as bad as outer space unless you spend all your time underground (which is kind of infeasible)
- Rockets and Space are Insanely Expensive: “One challenge is the extreme cost of transporting building materials to the Martian surface, which by the 2010s was estimated to be about US$2 million per brick.[6]” (from Wikipedia, https://en.wikipedia.org/wiki/Mars_habitat)
- Not in the video, but no better propulsion technology than chemical rockets, ion thrusters, and MAYBE rudimentary solar sails will ever exist. Fusion is too hot for any materials you could make. Hyperspace and warp drive are mere fantasies
- The dirt is filled with toxic perchlorates which would contaminate all the construction and cause lung disease besides being toxic to crops
- How will you get all the construction equipment and materials to Mars?
- How will you ever get more than a few dozens of people at most to Mars
- Again, there is no air (no, you can’t geoengineer or terraform it. That is so far beyond human technological capacity it’s just laughable)
- All construction of habitats would have to be done in spacesuits while being bombarded with ionizing radiation
They make the point that even the day the asteroid that killed the dinosaurs landed was a nicer day than any day on Mars, since mammals, plants, insects and other life SURVIVED it
Estimates are that a self-sustaining high tech civilization would require 500 million to 1 billion colonists, but we can’t even get to 100….
As well, there are few launch windows, when Earth and Mars are making approaches to each other and travel time would be 6-9 months in a tiny can, unlike the 3 days to the moon, which we can launch to every day
It’s all a Big Lie, a delusion, a fantasy. That seems like enough for now
https://www.youtube.com/watch?v=NOm_ucvQKRY&t=696s
Featured Image:
#astronomy #atmosphere #civilization #climateChange #colonization #elonMusk #habitat #humanLife #Mars #NASA #politics #radiation #science #scienceFiction #space #spaceFlight #toxic -
“As Trump boosts #nuclear power, regulators seek to eliminate a longstanding #radiation safety practice:
Currently, facilities such as nuclear plants, hospitals or academic institutions that use radioactive materials must ensure radiation exposures are kept ‘as low as reasonably achievable — the #ALARA principle. The NRC proposal would abandon that philosophy”
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核融合原子炉
核融合技術は未来のエネルギーとして期待されてます。https://note.com/poison_raika/n/n90493c59a7e0
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#nuclear #fusion #technology #energy #future #ideal #source #produce #really #already #reactor #material #properties #radiation #phenomenon #scientifically #possibility #similar #exact #irresponsible #fuel #waste #situation #credibility
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Nuclear fusion reactor
Fusion technology is expected to be the energy of the future.https://note.com/poison_raika/n/n3c8cbbc58290
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#nuclear #fusion #technology #energy #future #ideal #source #produce #really #already #reactor #material #properties #radiation #phenomenon #scientifically #possibility #similar #exact #irresponsible #fuel #waste #situation #credibility
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Реактор ядерного синтезу
Очікується, що технологія ядерного синтезу стане енергією майбутнього.https://note.com/poison_raika/n/n334441a7f568
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#nuclear #fusion #technology #energy #future #ideal #source #produce #really #already #reactor #material #properties #radiation #phenomenon #scientifically #possibility #similar #exact #irresponsible #fuel #waste #situation #credibility
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Item of the day: Pin Buttons / Magnets 1" - Hazard Warning Signs See it here: https://wavytail.etsy.com/listing/1030635972/pin-buttons-magnets-1-hazard-warning #lasers #radiation #danger
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💁🏻♀️ TIL: ☄️🔥 A recent study from #Purdue suggests fine dust from the #Chicxulub impact trapped heat in the upper #atmosphere, effectively charbroiling exposed organisms within hours.
Post-impact dust would have delivered 17 times the lethal #radiation dose for #humans, igniting #grass and #lichen across the #planet.
👉 https://arstechnica.com/science/2026/07/dust-cloud-from-dino-killing-asteroid-charbroiled-the-earth/
#dinosaurs #asteroid #massextinction #cretaceous #science #paleontology #earthscience #wildfires #astronomy
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The key idea behind ALARA is that any exposure to ionizing radiation carries some level of risk,
and reducing that exposure—no matter how small—helps prevent unnecessary health hazards, genetic damage, and long-term effects like cancer.
Why is ALARA Important?
🔸No Safe Dose of Radiation – Even low doses can potentially cause biological damage.
🔸Cumulative Exposure Risks – Radiation damage builds up over time, increasing health risks.
🔸Regulatory Compliance – Agencies such as Occupational Safety and Health Administration (OSHA), Nuclear Regulatory Commission (NRC), Environmental Protection Agency (EPA), and International Atomic Energy Agency(IAEA) require strict adherence to ALARA guidelines.
🔸Public & Worker Protection – Reducing exposure benefits not only workers but also patients, the public, and the environment.https://oshacode.com/alara-the-gold-standard-in-radiation-safety/