An international group of researchers has recorded a significant increase in the South Atlantic Anomaly, an area of weakened Earth’s magnetic field that poses a threat to the operation of satellites and spacecraft. A huge gap in our planet’s magnetic field, stretching from South America to Africa across the Atlantic Ocean, is rapidly expanding, according to recent research. The magnetic field is thought to be generated by the movement of matter in the Earth’s molten core. The main danger of the expansion of the South Atlantic Anomaly is the risk to space infrastructure in low Earth orbit.
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