The green flash is a rare optical phenomenon above the horizon directly at sunrise or sunset. The color is caused by green light from the sun that survives atmospheric refraction so that it can make ...

Just before sunrise or sunset, there’s sometimes a band of green light just above the sun, often described as a ‘flash.’ But some swear it’s just a myth. Here’s the truth and how you can see for ...

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 ...

There are very special cases, when the sky is very clear and exceptionally transparent, that a green flash can be glimpsed just as the very topmost part of the sun is rising or setting. When you ...

Bay Area meteorologist Jan Null had been trying to see the so-called green flash for nearly 50 years, looking for a hint of emerald any time he was at a beach during sunset. But it wasn't until Null ...