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ScienceAlert

ScienceAlert

NASA Is Watching a Vast, Growing Anomaly in Earth's Magnetic Field

ScienceAlert
Summary
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85% Informative

South Atlantic Anomaly ( SAA ) likened by NASA to a 'dent' in Earth 's magnetic field, or a kind of 'pothole in space' Space agency's satellites and spacecraft are particularly vulnerable to the weakened magnetic field strength within the anomaly, and the resulting exposure to charged particles from the Sun .

SAA is not a freak event of recent times, but a recurrent magnetic event that may have affected Earth since as far back as 11 million years ago .