Auroras, taken by Pilot Matt Melnyk, Baffin Island, Canada

Signs of the Season

SPACEWEATHER.COM NEWS: 09/22/2025

HAPPY EQUINOX: Today is the northern autumnal equinox. That’s good news for sky watchers because auroras love equinoxes. Around this time of year, the magnetic fields of Earth and sun can link together, setting the stage for geomagnetic storms. Researchers call it the “Russell-McPherron effect,” but you can just think of it as “fall colors.” Happy equinox! 

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