Earth's magnetic field intermittently shielded us during cosmic ray influx 41,000 years ago

Berlin, Germany (SPX) Apr 22, 2024

Earth's geomagnetic field, while generally shielding the planet from cosmic and solar radiation, experiences periods of significant fluctuation. Not only does the magnetic north shift from its geographically defined true north, but it also undergoes complete reversals. During such reversals, previously defined poles swap positions, causing a noticeable decrease in the magnetic field's strength.