CNNのインスタグラム(cnn) - 2月12日 10時00分

These strange columns of light have been spotted recently across the northern United States, dancing up toward the night sky and mesmerizing viewers. Fortunately for us, this is not an alien invasion or extraterrestrial activity, but rather an optical phenomenon courtesy of a cold, calm atmosphere. The pillars form when ice particles near the ground are light enough to remain suspended in the air, creating a collective ice surface that reflects a light source — such as a street lamp, moonlight or sunlight.

(📸: Ryan Clone)

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