#solarradiation — Public Fediverse posts

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.

https://youtu.be/3d6Hrt_eoEc

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.

Using 12 years of NASA data, I compared Daily Light Integral in Salem, Pasadena, Napa, Hawaii, Florida, and Illinois. The results explain why Salem's winter light is such a challenge--and provide the baseline for my new Apogee sensor measurements.

A Solar Radiation Study: Comparing Daily Light Integral Across Six Locations:
https://salemdata.net/johnpress/?p=312

#Greenhouse #Orchids #Citrus #SolarRadiation #DLI #DataVisualization #SalemOregon

The Mad Scramble to Dim the Sunlight

https://web.brid.gy/r/https://www.pressenza.com/2026/07/the-mad-scramble-to-dim-the-sunlight/

RE: https://mastodon.social/@badastro/116516951068876386

Interesting article! Recommended read.

#science #srm #solarradiation #responsible #unpredictable

Sun releases the largest solar radiation storm ‘in over 20 years,’ forecasters say

By Ashley Strickland, January 19, 2026

"Powerful solar activity released by the sun is heading for Earth and it’s likely to create dazzling auroral displays in unexpected areas Monday evening and early Tuesday morning. It could also disrupt #satellite-based communications and #GPS accuracy.

"A solar radiation storm, ranked at a level four out of five on a severity scale, is being tracked by the National Weather Service’s Space Weather Prediction Center, or #SWPC.

" 'An #S4 severe #SolarRadiation storm is now in progress - this is the largest solar radiation storm in over 20 years,' SWPC shared on X, formerly known as Twitter. 'The last time S4 levels were observed was in October, 2003. Potential effects are mainly limited to space launch, aviation, and satellite operations.' "

Read more:
https://www.cnn.com/2026/01/19/science/largest-solar-radiation-storm-auroras

#SolarFlare #GeomagneticStorm #Satellites #KesslerSyndrome? #Starlink

Level S4 solar radiation event

https://www.swpc.noaa.gov/news/g4-severe-geomagnetic-storm-levels-reached-19-jan-2026

#HackerNews #LevelS4 #SolarRadiation #Event #GeomagneticStorm #SpaceWeather #NOAA

Planes grounded after #Airbus discovers #SolarRadiation could impact #systems

Theo Leggett and Yang Tian, BBC News, December 5, 2025

Excerpt: "Airbus discovered that, at high altitudes, its data could be corrupted by intense radiation released periodically by the Sun.

"That led to the October incident in which an aircraft suddenly lost altitude - though the manufacturer said this was the only time an incident of its kind had occurred."

Read more:
https://www.bbc.com/news/articles/c8e9d13x2z7o

Archived version:
https://archive.ph/2DJBE

#SolarFlares #Grounded

#Chitonida (#Mollusca) exist since the #Cambrian. Bodies are covered with #calcareous #plates, flexibly connected. Most feed on vegetation cover. The #CambrianExplosion made based i.a. on #oxygen significant leaps in #animalevolution. Y. Zhang et al. (2025) assume a change in Earth's orbit altering #solarradiation, leading to land #weathering and #nutrients flow to the sea. Algae thrived and produced much oxygen.
© #StefanFWirth 2025

Ref
https://doi.org/10.1029/2025GL118689

#Pics
#AIassisted, © S.F.Wirth

White roofs should be mandatory in all new buildings to combat global warming.
#whiteroofs #whitecolor #buildings #passivecooling #albedo #solarradiation #sunlightreflection #sunlight #globalwarming #climatechange #greenhouseeffect #civilengineering

Salon: 70% of world's workers at elevated health risks due to climate change, #UN report finds
Presently there are roughly 18,970 people who are die every year on the job because of excessive #heat, more than 860,000 people who die from exposure to #airpollution and nearly 19,000 people who die from #NonMelanomaSkinCancer from exposure to #SolarRadiation. The authors even found that more than 26.2 million people suffer from #ChronicKidneyDisease because of workplace heat stress. They conclude that the world's countries will need to revise their labor protection laws to protect the working class.
#climatechange #environment
https://www.salon.com/2024/04/23/70-of-worlds-workers-at-elevated-health-risks-due-to-climate-change-un-report-finds/

The idea is to create a huge sunshade & send it to a far away point between the Earth & the sun to block a small but crucial amount of #SolarRadiation, enough to counter #GlobalWarming. #Scientists have calculated that if just shy of 2% of the sun’s #radiation is blocked, that would be enough to cool the planet by 1.5°C, or 2.7°F, & keep Earth w/in manageable #climate boundaries.

#ClimateSolutions #ClimateCrisis #ClimateScience #FringeScience #science #SunShields #SolarShields

@gdeihl

Geoffrey Deihl
Stratospheric Aerosol Injection: Earth’s Last Chance Dance?

"As a non-scientist, I can’t give an opinion about when to deploy this technology [stratospheric aerosol injection (SAI)]. I certainly don’t want to see the situation come to that. I can say with confidence, however, every day brings us closer to taking this risky path..."

With dire consequences

https://geoffreydeihl.substack.com/p/stratospheric-aerosol-injection-earths

#SAI #SRM #SO2 #ClimateEmergency #SolarRadiation #atmosphere #emissions #stratosphere

The United Nations #UN Environment Programme (#UNEP) convened a multidisciplinary expert panel to undertake a rapid review of the state of scientific research on #SolarRadiation #Modification (SRM) URI - One Atmosphere: An independent expert review on #SolarRadiation Modification research and deployment https://wedocs.unep.org/bitstream/handle/20.500.11822/41903/one_atmosphere.pdf?sequence=3&isAllowed=y #ClimateCrisis #governance #risk #CO2 #carbondioxide #air #water #oceans #acidification