PhysicsNo sign radiation from a missile explosion has spread beyond Russia An explosion at a Russian missile testing range led to local spikes in radiation, but it doesn’t seem to have spread to Europe as it did during the Chernobyl incident News
TechnologyA solar panel that unfolds in sunlight could power spacecraft Special polymers that expand when heated allow a solar panel to unfurl when it is exposed to sunlight, which could be useful for solar-powered spacecraft News