NASA - National Aeronautics and Space Administration

A solar wind streams flowing from small coronal holes hit Earth's magnetic field

A solar wind streams flowing from small coronal holes hit Earth's magnetic field on March 3rd and March 5th. Both triggered G1-class geomagnetic storms. Photo details: Nikkor 28mm / f1.4, Superia 800, and 3 to 8 seconds. John Russell, Nome, Alaska, USA