Source - Space Weather News for May 21, 2017:
http://spaceweather.comAN
AURORA NAMED "STEVE": This weekend, a solar wind storm has sparked
sightings of a mysterious filamentary aurora named "Steve" over the
badlands of Alberta, Canada. Although the form has been seen for many
years dancing among ordinary auroras, researchers do not fully
understand what causes it. New clues recently emerged when a European
Space Agency satellite flew directly through Steve.
The phenomenon is highlighted on today's edition of
Spaceweather.com.
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