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Thread: Earth's Green Flash

  1. #1 Earth's Green Flash 
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    Hopefully this is in the right discipline, having to do with optics! My question is whether on a tidally locked planet, in a red dwarf sun system, a 'green flash' would occur [the phenomena at the instant of sunset]. Given that the Sun does not appear to move from the planet's perspective, would there be a constant, small green light on the horizon if someone was to stand in the terminator zone, just between not seeing the sun on the horizon, and seeing the sun? And given the red dwarf's different color, etc., what color would the flash likely be? [Given the same atmospheric conditions of our Earth, the only major difference being a red dwarf star/sun instead of our type of star].
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    has lost interest seagypsy's Avatar
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    You mean the flash mentioned in Pirates of the Carribean: At World's End really happens? I thought that was just some mumbo jumbo for the movie. I have never seen a green flash before.


    Speaking badly about people after they are gone and jumping on the bash the band wagon must do very well for a low self-esteem.
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  4. #3  
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    Quote Originally Posted by seagypsy View Post
    You mean the flash mentioned in Pirates of the Carribean: At World's End really happens? I thought that was just some mumbo jumbo for the movie. I have never seen a green flash before.
    haha yes, it's perfectly real [on Earth], though perhaps not as theatrical as the one in the movie However, I'm wondering if it wondering if it would occur on a tidally locked planet
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    Iuvenis ducis Darkhorse's Avatar
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    Not sure about the effect that a red dwarf would have on the green flash but I would assume that if you where in the right place on the planet you could see a green rim constaintly. The following quote is from Wikipedia Green flash - Wikipedia, the free encyclopedia
    It was seen on and off for 35 minutes by members of the Richard Evelyn Byrd party from the Antarctic Little America exploration base in 1934: There was a rush for the surface and as eyes turned southward, they saw a tiny but brilliant green spot where the last ray of the upper rim of the sun hung on the skyline. It lasted an appreciable length of time, several seconds at least, and no sooner disappeared than it flashed forth again. Altogether it remained on the horizon with short interruptions for thirty-five minutes.
    When it disappeared momentarily it seemed to have been shut off by a tiny spurt, an inequality in the skyline caused by the barrier surface.
    Even by moving the head up a few inches it would disappear and reappear again and after it had finally disappeared from view it could be recaptured by climbing up the first few steps of the antanea [sic] post.
    The length of this event is attributed to a mirage effect, though personally I would think that the location of the sun in relation to the horizon during that event had something to do with it as well.
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  6. #5  
    has lost interest seagypsy's Avatar
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    Quote Originally Posted by MrPiano View Post
    Quote Originally Posted by seagypsy View Post
    You mean the flash mentioned in Pirates of the Carribean: At World's End really happens? I thought that was just some mumbo jumbo for the movie. I have never seen a green flash before.
    haha yes, it's perfectly real [on Earth], though perhaps not as theatrical as the one in the movie However, I'm wondering if it wondering if it would occur on a tidally locked planet
    I don't know anything about astronomy and very little about earth science. I prefer psychology. But I will at least look up what tidally locked means. I doubt I will have anything of substance to contribute to the thread beyond here but know that I am lurking and hoping to learn something. As I already have... looked up green flash and saw pics, thats amazing. Looks like a very tiny instance of Aurora borialis.
    Speaking badly about people after they are gone and jumping on the bash the band wagon must do very well for a low self-esteem.
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  7. #6  
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    Somewhere in the astronomy earth movement involved in modern ways.
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