A new study published in Nature Communications shows that previous changes in the direction of Earth's magnetic field reached rates that are up to 10 times larger than the fastest currently reported variations of up to one degree per year. The authors combined computer simulations of the field generation process with a recently published reconstruction of time variations in Earth's magnetic field spanning the last 100 000 years.

Skywatchers along a narrow band from west Africa to the Arabian Peninsula, India and the Far East witnessed a dramatic "ring of fire" solar eclipse Sunday, June 21, 2020.

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14 July 2020

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