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Astronomy Picture of the Day -- Distorted Green Flash Sunset over Italy
NASA ^ | September 08, 2015 | (see photo credit)

Posted on 09/08/2015 9:19:47 AM PDT by SunkenCiv

Explanation: This was one strange sunset. For one thing, the typically round Sun appeared distorted, geometrically, and multiply layered. For another, some of these layers appeared unusually green. The Sun, of course, was just fine -- its odd appearance was caused entirely by its light refracting in the Earth's atmosphere. When layers of the Earth's atmosphere are unusually warm, layers of the Sun may appear distorted or even seen multiple times. The effect is most strong nearest sunrise and sunset when terrestrial inversion layers occupy distinct altitudes above the horizon. Different colors of the Sun may also become deflected by significantly different amounts, so that the uppermost superior image may appear momentarily green -- a phenomenon known as a green flash. The featured image was taken in February from Porto Venere, Italy, with San Pietro church situated in the foreground.

September 08, 2015

(Excerpt) Read more at 129.164.179.22 ...


TOPICS: Astronomy; Astronomy Picture of the Day; Science
KEYWORDS: apod; astronomy; italy; portovenere; science
[Credit and Copyright: Paolo Lazzarotti]

1 posted on 09/08/2015 9:19:47 AM PDT by SunkenCiv
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To: brytlea; cripplecreek; decimon; bigheadfred; KoRn; Grammy; steelyourfaith; Mmogamer; dayglored; ...
The Big One

2 posted on 09/08/2015 9:20:39 AM PDT by SunkenCiv (What do we want? REGIME CHANGE! When do we want it? NOW)
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To: SunkenCiv

Cat pharts the cause.


3 posted on 09/08/2015 9:21:19 AM PDT by Resettozero
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To: SunkenCiv

GLOBAL WARMING..GLOBAL WARMING...AL WAS RIGHT AL WAS RIGHT


4 posted on 09/08/2015 9:22:27 AM PDT by Paul46360
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To: Paul46360

ILLEGAL INVASION WARMING!


5 posted on 09/08/2015 9:23:39 AM PDT by angcat
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To: SunkenCiv

THE GREEN FLASH......has any of my Navy buddies see it???


6 posted on 09/08/2015 9:33:27 AM PDT by Robe (Rome did not create a great empire by talking, they did it by killing all those who opposed them)
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To: SunkenCiv

And here I thought a green flash was caused by too much copper in the upper atmosphere...


7 posted on 09/08/2015 9:34:35 AM PDT by rjsimmon (The Tree of Liberty Thirsts)
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To: SunkenCiv
It's not green on my computer.
I was skeptical about the green flash -- until I saw it twice: once, very bright, from Frederikstad, St. Croix and once from Anna Maria Island, Florida.
8 posted on 09/08/2015 9:37:14 AM PDT by expat2
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To: rjsimmon

I suspect that it is an optical illusion, like the one you get if you stare at a white spot for a little while, then look away, and see a negative black spot. The last bit of the sun is red at sunset and when that disappears, you can sometimes see a color-negative green flash.


9 posted on 09/08/2015 9:43:01 AM PDT by expat2
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To: SunkenCiv

This is actually a very very rare event to capture on film- I’ve seen a few such photos- it only occurs when conditions are just right, and it happens in an instant, making it very hard to capture or even predict


10 posted on 09/08/2015 9:48:26 AM PDT by Bob434
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To: SunkenCiv

How to See the Green Flash

The “Green Flash”, also known as the “Green Ray”, is a visual phenomenon that occurs at sunset. It is considered good luck in some cultures to see the green flash; others see it as a more foreboding omen. Whatever your view, it is a brief but memorable sight but you have to be quite lucky to see it. Follow the steps outlined here to increase your chances

http://www.wikihow.com/See-the-Green-Flash


11 posted on 09/08/2015 9:49:34 AM PDT by Bob434
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To: expat2

It is not an afterimage illusion. It is refraction.


12 posted on 09/08/2015 10:00:22 AM PDT by Kirkwood (Zombie Hunter)
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To: expat2

It is green within the separated portion at the top. Maybe you need to adjust the color balance on your monitor. Older people tend to set their monitors toward the blue to compensate for yellowing by their crystalline lens in the eye.


13 posted on 09/08/2015 10:04:19 AM PDT by Kirkwood (Zombie Hunter)
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To: expat2
If it's an in eye optical illusion, how can it be photographed?


14 posted on 09/08/2015 6:53:28 PM PDT by Oztrich Boy (Palins are better parents than Clintons.)
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To: Robe
THE GREEN FLASH......has any of my Navy buddies see it???

Many times, my working on the bridge put me in the position of watching sunsets more than most.

15 posted on 09/09/2015 8:29:55 PM PDT by GATOR NAVY
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