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News
Four billion years ago, the young Sun may have unleashed superflares every few days—outbursts that Sun-like stars produce only about once a century today. The proton storms they sent into Earth’s atmosphere could have forged nitrous oxide, helping keep the planet warm, and hydrogen cyanide, a crucial feedstock for the chemistry that preceded life.
2+ week, 4+ day ago (662+ words) A 2026 proton-irradiation experiment adds laboratory support to the idea that the active young Sun helped warm early Earth while driving nitrogen chemistry relevant to life's origins....