StormWall: A six-satellite plasma shield could blunt solar superstorms

Scientists propose StormWall, a constellation of six bus‑sized satellites in geostationary orbit that would release gas to form a plasma barrier at Earth’s magnetosphere, potentially reducing the impact of solar superstorms by more than 50% (up to 84% in simulations of a 2024 event). While the concept is touted as feasible with current tech, it would be costly (billions), require large rockets, and raise environmental and safety questions, with further studies needed before any deployment.