NPR

Scientists Are Puzzled By Mysterious Lights In The Sky. They Call Them STEVE

Scientists don't know what's causing the aurora-like phenomenon, which has been known to amateur photographers for decades but only recently came to the attention of researchers.
Alberta Aurora Chasers captured STEVE in April in British Columbia, Canada. STEVE is the narrow ribbon of white-purple hues overhead, and the vibrant green light on the right is an aurora located further north.

There's a light in the night sky over Canada that's puzzling scientists. It looks like a white-purple ribbon. It's very hot, and doesn't last long. And it's named STEVE.

STEVE: as in, Strong Thermal Emission Velocity Enhancement.

Naturally.

Scientists don't actually know what's causing the atmospheric phenomenon, which has been known to amateur photographers of the

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