空を見上げたとき、太陽が三つ並んで見えたことはあるだろうか。
Have you ever seen three suns lined up when you looked up at the sky?
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This is a rare optical phenomenon called a sundog that was recently observed in Japan.
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In the photo that was taken, you can see three suns appearing at the same time, which has attracted a lot of attention on social media.
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According to experts, the bright spot in the center is the real sun, and the two streaks of light appearing on either side are not other celestial bodies.
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They are optical images caused by the refraction of sunlight in the atmosphere.
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The reason is that very small ice crystals are drifting high in the sky, and they act as natural prisms, refracting light and causing the phenomenon known as a sundog.
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A sundog genjitsu often appears when there are thin clouds in the sky, especially when the clouds contain a lot of ice crystals.
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When sunlight passes through ice crystals at the right angle, you can see three suns with the naked eye.
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In Japan, there have been numerous reports of mirages being observed under similar weather conditions.
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This phenomenon itself does not directly affect the weather or the environment, but it is considered one of the rare optical phenomena observed in the atmosphere.
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Clearly documenting a parhelion phenomenon like this is of great value as observational data and contributes to deepening our understanding of natural phenomena occurring in the Earths atmosphere.
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