We’ve flown a radiation-blocking vest to the Moon and back, and it worked
Summary
Ars Technica covers a NASA/Lockheed Martin/DLR collaboration testing AstroRad, a radiation-blocking vest by StemRad, aboard Artemis I. The vest reduced effective radiation dose by about 60% for a 1972-style solar storm in simulations, weighs 26 kg (with plans to cut weight to 16 kg), and offers movement-friendly shielding around the hips and torso, though it doesn’t protect against galactic cosmic rays.