(Aug. 17, 2026 / TPS-IL)
An Israeli-designed vest might considerably cut back astronauts’ radiation publicity on the best way to the Moon or Mars, in response to a brand new examine.
The vest, known as AstroRad and constructed by the Israeli firm StemRad, was examined aboard NASA’s Artemis I mission in late 2022. The findings present that the vest might cut back radiation publicity by as a lot as 60% % throughout a extreme photo voltaic storm.
The vest is designed to defend the organs most weak to radiation harm, together with bone marrow, lungs, the abdomen, colon, breasts and ovaries, utilizing a dense, hydrogen-rich plastic materials organized in a honeycomb sample. The examined model weighed about 26 kilograms, roughly 57 kilos.
The Matroshka AstroRad Radiation Experiment (MARE) was a joint mission between the German Aerospace Heart, NASA, the Israel Area Company, Israel’s Ministry of Innovation, Science and Know-how and StemRad. The Tel Aviv-based agency was based in 2011.
To check the vest, NASA despatched two mannequins formed like human torsos, nicknamed Helga and Zohar, on the uncrewed 25.5-day journey across the Moon and again aboard the Orion spacecraft. Zohar wore the AstroRad vest, whereas Helga didn’t. Each have been outfitted with hundreds of radiation sensors to measure how a lot radiation reached completely different elements of the physique.
Artemis I didn’t fly via an precise photo voltaic storm, so scientists used a pc mannequin, checked towards the true radiation information from the mission, to estimate how the vest would carry out if astronauts have been caught in extreme photo voltaic storms. Modeled on a extreme 1972 photo voltaic storm, the vest lowered radiation publicity by 60.7%. Modeled on a 1989 storm with extra penetrating radiation, it lowered publicity by 38.5%.
Researchers estimated that the discount might lengthen the interval astronauts might stay under specified radiation-risk thresholds by roughly 40 to 193 further days, relying on the state of affairs, though they pressured that this was a mannequin estimate. The vest additionally supplied about 30% more practical safety than a whole-body shielding configuration of the identical weight, suggesting that focused safety might be extra environment friendly than distributing shielding evenly throughout the physique.
“An experiment MARE marks an vital transition from measuring the radiation surroundings in area to evaluating sensible countermeasures that may be examined below mission situations,” mentioned Ran Levana, director of the Israel Area Company.
StemRad CEO Dr. Oren Milstein known as the check “a formative check for AstroRad in deep area and a big milestone for StemRad.” He mentioned he hopes the vest “will grow to be an ongoing Israeli contribution to NASA’s manned area program… and assist pave the best way for the participation of further Israeli astronauts in future missions.”
Israeli Minister of Innovation, Science and Know-how Gila Gamliel mentioned the examine “affirm[s] the robust place of the Israeli area business on the forefront of innovation and international science.”
Israeli groups have already submitted proposals to fly additional experiments on Artemis III, NASA’s deliberate subsequent Moon mission, with some clearing the company’s preliminary evaluation. Remaining approval is dependent upon NASA’s evaluation of readiness, security and scheduling.
The findings have been revealed within the peer-reviewed journal Science Advances.
