The green flash is a rare, brief optical event of green, yellow, and sometimes blue that colors the horizon, occurring at sunrise or sunset most often in the western U.S. Refraction and dispersion ...

Green flashes usually happen in less than a second. But if you're lucky, a green flash could shine for a minute or two. Null has observed this only rarely, even after over 45 years of documenting ...

A green flash can be seen at sunset in Siesta Key, Florida. (Image credit: Bernard Friel/Education Images/Universal Images Group via Getty Images) ...

A green flash can occur at either sunrise or sunset but is more easily observable during the latter. On a cloudless evening, Earth’s atmospheric sunlight distortion is most pronounced when the sun is ...

One of those things, it turns out, is the green flash, an atmospheric optical feature that occurs when weather conditions and visibility are just right. Watch NBC Bay Area News 📺 Streaming free ...

One of those things, it turns out, is the green flash, an atmospheric optical feature that occurs when weather conditions and visibility are just right. 📺 Los Angeles news 24/7: Watch NBC4 free ...

While the length of a green flash is dependent on the speed at which the sun is setting or rising, usually between one and three seconds, the longest recorded observation lasted for a whopping 35 ...