Just as the sun slips behind the Chilean Andes, it seemed to send up a tiny emerald flare. The photograph, taken from Cerro Pachón in Chile by NOIRLab Audiovisual Ambassador Petr Horálek, captures a ...
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Weather words: Green flash
Ever seen a rare green streak of light near the horizon right around sunrise or sunset? These "green flashes" are beautiful indeed, and the reason they sometimes form is very interesting. To ...
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