'Cataclysmic' solar storm hit Earth around 2,687 years ago, ancient tree rings reveal
Space.com   10 days ago
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'Cataclysmic' solar storm hit Earth around 2,687 years ago, ancient tree rings reveal  Space.comNorthern Lights: Why An Extreme Solar Storm Now Would Be Cataclysmic  ForbesSolar superstorm in 664 BCE recorded in tree rings  EarthSkyEarth’s Old...