There is a weak spot in earth’s magnetic field above the Atlantic called the South Atlantic Anomaly. ThePrint’s Sandhya Ramesh takes a look at the slowly widening dent in the magnetosphere and how it affects earth.----more----Supplementary reading NASA Researchers Track Slowly Splitting 'Dent' in Earth’s Magnetic Field: https://www.nasa.gov/feature/nasa-researchers-track-slowly-splitting-dent-in-earth-s-magnetic-field