The best images of the Oct. 10 auroral storm

Last night’s G4 geomagnetic storm produced the best and most intense auroral displays since May.

Solar cycle 25 continues to deliver, with flares and coronal mass ejections delivering repeated auroral storms visible at latitudes much lower than normal. Last night’s geomagnetic storm reached G4 levels — the strongest since the historic G5 storm of May 10/11.

This collection of photos includes the best of reader submissions, social media, and our own staff. To submit your photos, email them to readergallery@astronomy.com.

A pillar erupts in this shot taken from Nashotah Park in Waukesha, Wisconsin. Credit: Mark Zastrow

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