Sky-watchers in the Northern Hemisphere are reporting nightly outbursts of glowing tendrils in the twilight skies—a sign that noctilucent, or night-shining, clouds are soon to appear. Here's how to get the best view.
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From @abdullahalrafiq
Sky-watchers in the Northern Hemisphere are reporting nightly outbursts of glowing tendrils in the twilight skies—a sign that noctilucent, or night-shining, clouds are soon to appear. Here's how to get the best view.