2/ A Coronal Mass Ejection (CME) involves the emis­sion of electrically charged matter and accompany­ing magnetic field into space. When it hits the earth, it interacts with the earth's magnetic field and produces Geomagnetically Induced Currents (GIC) on the crust.
[Image: NASA] pic.twitter.com/BO910bko5S

— Sangeetha Abdu Jyothi (@sangeetha_a_j) July 29, 2021