Hear Earth's Ancient Magnetic Flip: A Haunting Audio

Scientists reconstructed the Laschamps magnetic reversal (about 41,000 years ago) by merging ESA’s Swarm satellite data with geomagnetic records, turning the upheaval into an eerie audio track that suggests the field briefly weakened to around 5% of its current strength for about 440 years. The work, highlighted by DTU and GFZ researchers and published in 2024, underscores the importance of understanding past extreme geomagnetic events to anticipate future space weather and environmental effects, especially amid ongoing pole drift and the South Atlantic Anomaly.