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University of Japan

Coverage of University of Japan in the Nexus archive.

Earliest in view: May 14 · 05:55 UTCMost recent: May 14 · 05:55 UTC
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  • SCIENCEMay 14 · 05:55 UTCSCIENCE DAILY
    Deadly “red sky” solar storm from 800 years ago discovered in ancient trees

    Researchers in Japan discovered a medieval solar storm from around 1200 CE by analyzing ancient tree rings and centuries-old sky observations. The findings suggest the Sun was more active at the time with short solar cycles. This event was linked to reports of eerie red auroras and spikes of carbon-14 in buried wood.