NASA researchers track slowly splitting 'dent' in Earth's magnetic field
Greenbelt MD (SPX) Aug 18, 2020
A small but evolving dent in Earth's magnetic field can cause big headaches for satellites. Earth's magnetic field acts like a protective shield around the planet, repelling and trapping charged particles from the Sun. But over South America and the southern Atlantic Ocean, an unusually weak spot in the field - called the South Atlantic Anomaly, or SAA - allows these particles to dip close
