Many in the area turning their eyes to the skies last night could catch a spectacular sight: a glimpse of the northern lights.

The aurora borealis put on a solid show that could see a repeat performance tonight.

Northern lights seen in Naperville sky. Photographs by Anuja Shah Vakharia and Naila Iftikhar (noted left to right.)

What exactly are the northern lights?

The light show comes courtesy of geometric storms, which are the result of a solar flare creating Coronal Mass Ejections. According to the National Oceanic and Atmospheric Administration , there are currently strong geometric storm conditions, at G3 levels, with a chance for those to rise to G4 levels as they had yesterday, as another disturbance is expected to hit around midday today.

With those elevated levels, the N

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