Árvores antigas revelam tempestade solar medieval de 1200 d.C.

14 de maio de 2026

Reportado por IA

Pesquisadores descobriram evidências de um poderoso evento de prótons solares que atingiu a Terra por volta de 1200 d.C. ao analisar picos de carbono-14 em árvores japonesas antigas e cruzar informações com registros medievais de auroras vermelhas.

O estudo, conduzido por cientistas do Instituto de Ciência e Tecnologia de Okinawa, identificou que o evento subextremo ocorreu entre o inverno de 1200 d.C. e a primavera de 1201 d.C. A pesquisa combinou medições ultraprecisas de carbono-14 obtidas de árvores asunaro enterradas na província de Aomori com relatos históricos, incluindo descrições de luzes vermelhas no céu noturno em um diário japonês e relatos semelhantes provenientes da China.

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terça-feira, 09 de junho de 2026, 21:03h