📄 Review of Solar Energetic Particle Prediction Models
Quicklook:
Whitman, Kathryn et al. (2023) · Advances in Space Research
Reads: 7 · Citations: 114
DOI: 10.1016/j.asr.2022.08.006
🔗 https://ui.adsabs.harvard.edu/abs/2023AdSpR..72.5161W/abstract
#Astronomy #Astrophysics #SolarPhysics #PlanetaryScience #SpaceRadiation
Review of Solar Energetic Particle Prediction Models
Solar Energetic Particle (SEP) events are interesting from a scientific perspective as they are the product of a broad set of physical processes from the corona out through the extent of the heliosphere, and provide insight into processes of particle acceleration and transport that are widely applicable in astrophysics. From the operations perspective, SEP events pose a radiation hazard for aviation, electronics in space, and human space exploration, in particular for missions outside of the Earth's protective magnetosphere including to the Moon and Mars. Thus, it is critical to improve the scientific understanding of SEP events and use this understanding to develop and improve SEP forecasting capabilities to support operations. Many SEP models exist or are in development using a wide variety of approaches and with differing goals. These include computationally intensive physics-based models, fast and light empirical models, machine learning-based models, and mixed-model approaches. The aim of this paper is to summarize all of the SEP models currently developed in the scientific community, including a description of model approach, inputs and outputs, free parameters, and any published validations or comparisons with data.
"Deflector Shields Up!"
Actual things you know, not like in the movies but impressive if made to work...
https://ntrs.nasa.gov/citations/20230018480
#NASA #Space #Spacecraft #SpaceRadiation #SolarPhysics #Science
Deployed Electromagnetic Radiation Deflector Shield
Creating a Zone of Minimum Radiation and Magnetic/Plasma Effects for Spacecraft - NASA Technical Reports Server (NTRS)
Spaceflight outside of the Earth's protective magnetic field is dangerous from a cosmic radiation perspective. Inside Earth's magnetic field, where the manned International Space Station (ISS) orbits, the radiation encountered is minimal and almost all is deflected by our planet's magnetic fields. However, outside that protective shield, the Sun's solar wind (high energy radiation, solar energetic particles or SEPs) consisting of protons, electrons, alpha particles and plasmas continuously bombards the spacecraft for the months or years of spaceflight. On occasion the Sun produces a CME (Coronal Mass Ejection) that vastly increases the energy and volume of this radiation. These particles damage human DNA as well as living tissue and can destroy sensitive electronics. The Deployed Electromagnetic Radiation Deflector Shield (DERDS) provides a magnetic field that will deflect SEPs and CMEs and other harmful solar and cosmic rays away from a manned spacecraft, robotic spacecraft, or manned extra-planetary base stations using an electromagnet that is deployed between the spacecraft/station and the source of radiation and creates a magnetosphere or zone of minimal radiation in which the spacecraft or base station would reside.
Oubliez la fusée ! Voici le vrai problème mortel qui nous empêche d'aller sur Mars
Avant de poser le pied sur Mars, les astronautes devront terrasser un danger invisible qui relègue le problème de la fusée au second plan. Les rayons cosmiques traversent les cellules et l’ADN, et ils augmentent fortement le risque de maladies graves. Les scientifiques testent déjà des boucliers et des solutions biologiques pour réduire ces effets.
Radiation ☢️ -triggered #computer errors could lead to an "uncommanded" change in altitude 🛬 so severe that it might exceed "the aircraft's structural capability" 💥. As #computer chips have become smaller, they have also become more vulnerable to bit flips https://www.bbc.com/future/article/20251201-how-cosmic-rays-grounded-thousands-of-aircraft
Intense #solar ☀️ #radiation may corrupt data critical to the functioning of flight ✈️ controls 🕹️ https://www.airbus.com/en/newsroom/press-releases/2025-11-airbus-update-on-a320-family-precautionary-fleet-action
#SpaceWeather #SpaceRadiation #electronics #Airbus #A320
Bit flips: How cosmic rays grounded a fleet of aircraft
Radiation from space that led to more than 6,000 Airbus aircraft needing emergency computer updates could become a growing problem.
The risks with #SpaceRadiation ☢️ are assigned the highest priority among all risks associated with #SpaceTravel. Active shielding 🛡️ methods, which use #electromagnetic fields to deflect charged particles, can make #DeepSpace 🌌 travel safer and more feasible. Placing the passive shielding before the active shielding is more effective than placing the identical active shielding before the passive shielding of the same thickness https://www.sciencedirect.com/science/article/pii/S2214552423000391
#HumanSpaceflightHealth #RadiationProtection
Le sauvetage incroyable de l'instrument de la sonde Juno par la Nasa à des millions de kilomètres
Les missions spatiales sont souvent pleines de péripéties, de petits incidents qui nécessitent de l'audace et de l'ingéniosité. Ici, c'est la sonde Juno dont la Nasa a dû réparer l'imageur à près de 600 millions de kilomètres de distance.
This Superbacteria can Withstand Enough Radiation to Kill a Person
Nature is filled with examples of extreme life (aka. extremophiles), which are so-called because they can withstand extreme conditions. These include organisms that can survive in extremely dry conditions, extreme temperatures, acidity, pressure, and even the vacuum of space. The study of these organisms not only helps scientists learn more about the kinds of environments … Continue reading "This Superbacteria can Withstand Enough Radiation to Kill a Person"
How NASA Will Protect Astronauts From Space Radiation
#ActiveShielding #SpaceRadiation
"Using active shields that deflect charged particles just like the Earth’s magnetic field does—was first proposed in the 1960s. Today, we’re finally close to making it work."
Ars Technica:
Shields up: New ideas might make active shielding viable
"Active shielding was first proposed in the '60s. We’re finally close to making it work."
https://arstechnica.com/science/2024/03/shields-up-new-ideas-might-make-active-shielding-viable/
Shields up: New ideas might make active shielding viable
Active shielding was first proposed in the '60s. We’re finally close to making it work.
“There’re a lot of hazards we don’t know about. In #LEO, we are protected by our #magnetosphere from #SpaceRadiation. If we go outside of that, all of the sudden we have #galactic #CosmicRays ☢️ we have to deal with, we have a lot of #SolarParticles we have to deal with and we also have variable #gravity”. Even a short flight beyond #ISS altitude impacts various aspects of human physiology and #microbiome 🦠 composition. https://asm.org/Articles/2022/October/Out-of-This-World-Microbes-in-Space
#HumanSpaceflightHealth
Out of This World: Microbes in Space | ASM.org
When humans go to space, microbes go with them. Researchers are learning how space impacts the microbes living in, on and around astronauts—and how they can be used to advance future missions.
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