IS THE SOUTH ATLANTIC ANOMALY SPLITTING? Earth's magnetic field has a weak spot: The South Atlantic Anomaly, where space radiation comes closer than usual to our planet's surface. New data from Europe's Swarm spacecraft shows that the Anomaly might be splitting in two, creating a new weak spot near Africa in addition to the original over South America. Get the full story at Spaceweather.com .
Aurora alerts: Sign up for Space Weather Alerts and receive a text message when auroras appear in your area.
Above: The South Atlantic Anomaly (color-coded blue) may be splitting, according to this magnetic map from the European Space Agency's Swarm spacecraft.