Space radiation shielding in 2026: overview
Space radiation shielding reduces particle exposure to crew and spacecraft systems, but must balance mass, structural performance and secondary radiation: high-energy cosmic rays can fragment in shielding and generate damaging secondary particles. This matters for long-duration missions beyond Earth’s magnetic protection, where solar particle events and galactic cosmic rays create different protection demands. In October 2026, Korea Advanced Institute of Science and Technology researchers reported continuous boron nitride nanotube fibers with strength above 1 GPa and stability at 1000 °C, aiming to make neutron-shielding textiles more durable.
Recent work is shifting from bulk hull material toward layered, localized protection. Harbin Institute of Technology and Italian Institute for Nuclear Physics proposed hybrid multilayer shielding for lunar habitats in August 2026, while an August 2026 evaluation examined the AstroRad wearable vest flown on Artemis I. AAKA Space Studio reported a 3D-printed basalt structure engineered to resemble Martian soil in May 2026. These directions reflect a persistent design problem: materials and geometry must reduce dose without imposing unacceptable mass, power or fabrication demands, and performance must be checked against realistic radiation environments.
- 1From bulk to tailored: Material innovation such as boron nitride nanotube fibers is advancing alongside wearable and habitat-specific shields, shifting design toward targeted protection rather than reliance on a uniform hull.
- 2Dose models matter: Transport simulation, particle measurements and crew-dose assessment must connect, since a material’s attenuation alone cannot show whether it reduces biologically relevant exposure.
- 3Passive and active paths: Hydrogen-rich layers and local regolith offer passive mass shielding, while magnetic deflection remains an attractive but technically demanding route for charged particles.
Top organizations working on space radiation shielding
Ranked by Linknovate activity score · last 24 monthsThe activity score adds up the relevance of every patent, publication, grant and news item linking an organization to space radiation shielding. Showing 7 of 333 organizations.
| # | Organization | Approach | Signals (24 mo) | Momentum | Why it matters |
|---|---|---|---|---|---|
| 1 | 
NASA
Other · United Kingdom |
General | PUB 3 · NEWS 412 | +16% | NASA studies radiation exposure and crew health to inform protection requirements and mission planning for human exploration beyond Earth’s magnetic field. |
| 2 | 
European Space Agency
Other · France |
Hydrogen-rich shielding | PUB 5 · NEWS 107 | -16% | ESA-linked research compares radiation doses behind standard, novel, and locally sourced shielding materials, and examines models for assessing astronaut exposure. |
| 3 | 
Korea Advanced Institute of Science and Technology
Research · South Korea |
General | PUB 3 · NEWS 16 | new | Recently, researchers reported strong, heat-stable boron nitride nanotube fibers intended for neutron-shielding textiles, addressing the challenge of turning nanotubes into durable macroscopic materials. |
| 4 | BL
Bnnt Llc
Corporate · United States |
General | NEWS 13 | new | BNNT LLC produces boron nitride nanotubes, a material under investigation for space-radiation protection, including shielding against secondary neutrons. |
| 5 | NL
Nasa Langley Research Center
Research · United States |
Hydrogen-rich shielding | PUB 13 | -14% | NASA Langley researchers validate radiation-transport nuclear models and study hydrogen-rich polyethylene-based composites as potential spacecraft shielding materials. |
| 6 | NJ
Nasa Johnson Space Center
Research · United States |
General | PUB 12 · NEWS 1 | -56% | Recently, researchers evaluated the AstroRad wearable radiation-protection vest as flown on Artemis I, examining its potential to reduce astronaut exposure during deep-space missions. |
| 7 | 
Massachusetts Institute of Technology
Research · United States |
Regolith and terrain shielding | PUB 8 · NEWS 31 | +17% | MIT research examines lunar regolith as an in-situ shielding resource and develops additive manufacturing methods for polyethylene-based composite radiation shields. |
| 8 | ··Hidden organizationCompany | Approach | PAT 00 · PUB 00 GRANTS 0 · NEWS 00 | +00% | Available to registered users. |
| 9 | ··Hidden organizationCompany | Approach | PAT 00 · PUB 00 GRANTS 0 · NEWS 00 | +00% | Available to registered users. |
| 10 | ··Hidden organizationCompany | Approach | PAT 00 · PUB 00 GRANTS 0 · NEWS 00 | +00% | Available to registered users. |
Leading research centers
Leading research institutions 285 total
- Korea Advanced Institute of Science and TechnologySouth KoreaRecently, researchers reported strong, heat-stable boron nitride nanotube fibers intended for neutron-shielding textiles, addressing the challenge of turning nanotubes into durable macroscopic materials.
- NLNasa Langley Research CenterUnited StatesNASA Langley researchers validate radiation-transport nuclear models and study hydrogen-rich polyethylene-based composites as potential spacecraft shielding materials.
- NJNasa Johnson Space CenterUnited StatesRecently, researchers evaluated the AstroRad wearable radiation-protection vest as flown on Artemis I, examining its potential to reduce astronaut exposure during deep-space missions.
- ··Hidden research institutionCountryAvailable to registered users, with their key researchers.
- ··Hidden research institutionCountryAvailable to registered users, with their key researchers.
Where space radiation shielding innovation happens
Share of documents with at least one organization from each country.
Open the interactive map with all 333 organizationsMain technical approaches
Last 24 months| Approach | What it is | Documents | Leading organizations |
|---|---|---|---|
| Hydrogen-rich shielding | Hydrogen-rich materials can limit secondary particle production, but must meet structural, volume and durability demands. | 133 |
NASA, European Space Agency, Massachusetts Institute of Technology |
| Metallic shielding | Metal shields can integrate with spacecraft structures, but their mass and potential to generate secondary radiation are trade-offs. | 43 |
European Space Agency, University of Turin, Thales Alenia Space |
| Graded-Z composites | Layering materials with different atomic numbers can manage mixed radiation, but composition and layer design require careful optimization. | 70 |
Korea Advanced Institute of Science and Technology, NASA, Defense Acquisition Program Administration |
| Regolith and terrain shielding | Local soil or terrain can provide substantial passive protection, but depends on site conditions and excavation or habitat construction. | 91 |
NASA, European Space Agency, Chungnam National University |
| Active field shielding | Magnetic or electric fields aim to deflect charged particles, but add engineering complexity and are difficult to apply to high-energy cosmic rays. | 313 |
NASA, European Space Agency, Ghent University |
Emerging trends
Last 12 months vs previous 36 monthsTerms whose frequency in the last 12 months grew the most compared with the previous 36 months.
Funding and investment
Recent funding rounds
Reported grant funding totals $23,872,260 across 29 grants since 2020.
Patent landscape
Top patent holders · last 24 monthsRecent developments
Latest news, duplicates removed- Oct 2026A Medical College of Wisconsin study exposed rats to a mix of cosmic-ray ions and simulated weightlessness, finding fibrosis that appeared months later, even at the lower dose. As NASA and its partners plan crewed…Scientific Inquirer
- Oct 2026As space exploration technologies accelerate, an engine that can traverse deep space equally fast is needed- and nuclear engines could be the answer. For decades, spacecraft have relied largely on chemical rockets to…Innovation News Network
- Sep 2026A 0.37-square-meter panel built from about 1,500 neodymium permanent magnets could deflect roughly 20% of low-energy solar protons while drawing no spacecraft power, the researchers estimate. The concept is still in…Bitcoin News
- Aug 2026A radiation shielding vest tested during the uncrewed Artemis I flight in 2022 has been shown to significantly reduce the radiation dose that future astronauts or deep-space tourists might receive. The data for this…Physics World
- Month 20XXHidden developmentAvailable to registered users with alerts enabled.
Frequently asked questions about space radiation shielding
What companies are working on space radiation shielding?
Patent holders include Dettwiler and Associates Ltd. (3 patents), plus Airbus Operations, Space Division and K2 Space (2 each). Other named holders include Raytheon Co., Nippon Telegraph and Telephone, Huawei and Rapiscan Holdings Inc., each with 1. These counts describe topic-linked patents, not necessarily each organization’s full portfolio or commercial product range.
Which space radiation shielding startups are most promising in 2026?
StemRad Ltd is the clearest startup-linked example in the available organizations, with 9 documents in the 24-month window and work on AstroRad wearable protection. An August 2026 publication evaluated the vest using Artemis I flight data, involving NASA Johnson Space Center and German Aerospace Center. The facts support a concrete development direction, but do not provide a comparative startup ranking or commercialization assessment.
Who are the main space radiation shielding manufacturers or suppliers?
BNNT LLC is identified as a producer of boron nitride nanotubes, while Korea Advanced Institute of Science and Technology researchers reported BNNT fiber work in October 2026. These are material-level supplier and research examples, not proof of qualification as flight-hardware vendors. Space Division, Airbus Operations and K2 Space appear as patent holders, but the facts do not establish them as shielding-material suppliers.
Which universities and research centers lead space radiation shielding research?
NASA Langley Research Center, NASA Johnson Space Center, Korea Advanced Institute of Science and Technology and Massachusetts Institute of Technology are named research participants. NASA Langley validates radiation-transport models and studies polyethylene composites; NASA Johnson Space Center evaluated AstroRad, while KAIST reported BNNT fibers and MIT studies lunar regolith shielding and additive manufacturing. Their work spans models, materials, wearables and in-situ resources.
How much funding has space radiation shielding received?
Reported grant funding totals $23,872,260 across 29 grants since 2020. The facts do not itemize grant recipients or show that every award is exclusively for shielding. A separate funding-round KPI lists 15 rounds totaling $474,549,325, but named entries include unrelated projects, so that aggregate should not be treated as shielding-specific funding.
Is space radiation shielding patent activity growing?
Patent activity declined 33.3%, with 20 patents in the 24-month window. By contrast, 345 publications appeared in 2025, up 29.2% from the previous year. These figures point to a research-heavy field, but they do not by themselves establish commercial maturity or the quality of individual inventions.
What are the main approaches in space radiation shielding and how do they differ?
The main approaches are hydrogen-rich shielding, metallic shielding, graded-Z composites, regolith and terrain shielding, and active field shielding. Hydrogen-rich materials and regolith provide passive protection, while metallic shields can also serve structural roles. Graded-Z composites combine materials to manage mixed radiation. Active fields aim to deflect charged particles, but introduce engineering complexity and challenges for high-energy cosmic rays.
Which countries lead space radiation shielding?
The United States leads recorded activity with 2,952 documents, followed by the United Kingdom with 1,443 and France with 718. China has 688 documents and Germany has 557. These country figures describe document activity in the topic dataset; they do not measure national capability or the performance of individual organizations.
What are the applications of space radiation shielding?
The listed applications are spacecraft electronics (408 documents), crewed spacecraft (240), wearable protection (161) and planetary habitats (104). Shielding can protect electronic systems from faults or degradation, reduce crew exposure during missions, provide targeted personal protection and help make lunar or other planetary habitats safer. The application counts indicate areas of activity, not comparative market size.