Swarm Satellite Data Shows South Atlantic Magnetic Anomaly Expanding Rapidly

Using 11 years of magnetic field measurements from the European Space Agency's Swarm satellite constellation, scientists have discovered that the weak region in Earth's magnetic field over the South Atlantic—known as the South Atlantic Anomaly—has expanded by an area nearly half the size of continental Europe since 2014.

Earth's magnetic field is vital to life on our planet. It is a complex and dynamic force that protects us

The South Atlantic Anomaly affects satellite operations and poses radiation risks to spacecraft and astronauts.