Steve and a Picket Fence Aurora over Ness Lake in Northern BC, Canada. While related to the Aurora Borealis (or Northen Lights) ‘Steve’ is a discrete optical phenomenon determined to be caused by a 25 km wide ribbon of hot gasses at an altitude of 300 km, temperature of 3000 °C and flowing at a speed of 6 km/s (compared to 10 m/s outside the ribbon).

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