Yep, a self-healing metal.
Scientists have discovered that metal-halide perovskite, a next-generation semiconductor material, can self-heal from radiation damage in space. And this could be a game-changer for space-based solar panels and future power generation.
theconversation.com/space-radi…
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Space radiation can damage satellites − my team discovered that a next-generation material could self-heal when exposed to cosmic rays
Spacecraft exteriors that automatically heal from radiation damage would change the game − one material shows promise.The Conversation