Earth's Ancient Magnetic Flip Reimagined as Haunting Audio
Scientists used ESA’s Swarm satellite data to turn the 41,000-year-old Laschamps magnetic reversal into an eerie audio track, illustrating a dramatic field flip when the magnetosphere weakened by roughly 5–25% of its current strength over about 250 years and remained abnormally oriented for around 440 years. The event increased cosmic-ray exposure, leaving isotopic fingerprints like higher beryllium-10 and potentially impacting climate and megafauna; ongoing Swarm measurements aim to better predict future geomagnetic fluctuations.
