Posts by 

Raúl Cortés

Aurora season: Why more auroras at equinoxes?

An aurora season occurs in March and October each year, due to the way the magnetic fields of the sun and the Earth work in conjunction with sun-Earth geometry.

Sun activity: Possible CME sideswipe weekend of March 18

A filament, a long rope of solar material, snapped free of the sun's magnetic field to release a CME, which may cause auroras this weekend. Stay tuned!

Sun activity: Glorious auroras from CME direct hit March 13

Sun news. A CME from a March 10 solar flare struck Earth directly on March 13. It caused a glorious display of auroras at mid- to high latitudes.