The Light Making Waves

SPACEWEATHER.COM NEWS: 09/26/2025

SHARK’S FIN AURORA: On Sept. 22nd, photographer Karsten Berger of High Level, Alberta, captured a striking auroral shape: a razor-sharp green triangle jutting into the night like the fin of a shark. It may have been the crest of a breaking Kelvin-Helmholtz (K-H) wave:

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