Pic of the Day: Flying Saucers Shoot Death Rays Over Colorado?

The clouds and dramatic light rays that formed at sunset yesterday just east of where I live here in Colorado sure did look like an alien invasion had begun.

But the flying saucers were a particularly cool kind of cloud formation that’s common in these parts. And those rays? As ominous as they looked in combination with the saucers, they were a spectacular example of a phenomenon known as anticrepuscular rays. More about them in a minute.

But first, what about those clouds? They are kn

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