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South Atlantic Anomaly Expands, Sparks Ongoing ESA Research

10/20/2025

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Summary

Story summary

Scientists report that the South Atlantic Anomaly has expanded rapidly over the last eleven years.
An international team analyzed data from the European Space Agency's Swarm satellites to study the anomaly.
Lead author Chris Finlay noted that the anomaly behaves differently across regions, indicating complex underlying processes.
The ESA plans to extend the Swarm mission beyond 2030 to continue investigating these magnetic field changes.

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Story summary

Scientists report that the South Atlantic Anomaly has expanded rapidly over the last eleven years.
An international team analyzed data from the European Space Agency's Swarm satellites to study the anomaly.
Lead author Chris Finlay noted that the anomaly behaves differently across regions, indicating complex underlying processes.
The ESA plans to extend the Swarm mission beyond 2030 to continue investigating these magnetic field changes.