The Electric Blue Polar Cloud Season Came Early This Year
Noctilucent clouds, high-altitude clouds that appear to glow in the sky at night, usually show up in the Southern Hemisphere summer. Satellite images showed them covering Antarctica in early November.
Đọc tiếp trên NPR
December 3, 2016 at 05:05AM
Environment
NPR News: The Electric Blue Polar Cloud Season Came Early This Year
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