National Weather Service staff at its Moon office got a few odd calls Tuesday night about a strange-looking blue swirl moving across the sky. “We had a couple of calls on the overnight shift,” said ...

Stargazers across the UK have been left puzzled by the sight of a spiralling glowing orb in the night sky. The mysterious spectacle has been reported in areas including Yorkshire, Greater Manchester, ...

ANCHORAGE, Alaska (AP) — Northern light enthusiasts got a surprise mixed in with the green bands of light dancing in the Alaska skies: A light baby blue spiral resembling a galaxy appeared amid the ...

Ever gazed up on a bright day and wondered why the sky isn’t green, purple, or pink, but a vivid blue? The answer lies in how sunlight interacts with Earth’s atmosphere, creating a daily spectacle of ...