Every year in October, as a result of the dust left behind by comet 21P/Giacobini-Zinner, the sky puts on a magical show: the ...
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When Does Nighttime Begin and End?
We astronomers have a habit of throwing around terms that we consider to be obvious, only to watch the eyes of normal people glaze over. For example, albedo, analemma, aphelion, air mass ... and ...
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The Sunset Airshow That Stunned the Crowd with Flares and Fire
As the sun dipped below the horizon, six Patrouille Suisse jets streaked across the glowing sky, releasing flares that shimmered like falling stars. Their flawless formation and perfect timing turned ...
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