Astronaut photographs strange light phenomenon that looks like a fleet of alien spacecraft

NASA astronaut Matthew Dominick captured this strange photo while aboard the International Space Station. While they look like a fleet of alien spacecraft above Earth, they're actually "red sprites."

These rare flashes of light are a kind of  Transient Luminous Event (TLE) that appear high above the clouds in the mesosphere, the third highest layer of Earth's atmosphere. — Read the rest

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