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Earth got hammered by cosmic rays 41,000 years ago due to a weak magnetic field
"Understanding these extreme events is important for their occurrence in the future, space climate predictions and assessing the effects on the environment and on the Earth system."
The question is, Do periods of low magnetosphere intensity also correlate with major upheavals in Earth's biosphere, the complete zone of our planet over which life exists, ranging from mountaintops to the deepest ocean trenches? "Understanding these extreme events is important for their occurrence in the future, space climate predictions, and assessing the effects on the environment and on the Earth system," Sanja Panovska, a scientist at GFZ Potsdam in Germany, said in a statement. This indicates a very low magnetosphere intensity during the Laschamps excursion, leading to vastly more cosmic rays reaching Earth's atmosphere and creating showers of secondary particles.
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