Scientists have discovered a 540-million-year-old connection between Earth’s magnetic field and atmospheric oxygen levels, which could help identify conditions necessary for life on other planets. The study found that peaks in magnetic field intensity coincided with spikes in oxygen, suggesting a crucial link between the two.
Researchers analyzed two datasets: one tracking ancient magnetic field strength in rocks and minerals, and another monitoring atmospheric oxygen through geochemical proxies. They discovered a strong correlation between the two, with minimal time lag between changes in magnetic field strength and oxygen levels.
The study’s findings suggest that processes within Earth’s core may influence both the magnetic field and atmospheric chemistry. While the exact mechanisms behind this connection are unclear, the research offers new insights into how Earth has maintained its delicate balance for life to thrive.
This discovery could also aid scientists in understanding conditions necessary for habitability on other planets. As researchers continue to explore Earth’s past, they may uncover more about the forces that sustain life on our planet.
Source: https://www.indiatoday.in/science/story/scientists-discover-540-million-year-old-secret-that-fuels-life-on-earth-2743021-2025-06-19