Rare Natural Sky Phenomena

Imagine seeing two suns in the sky. Quite amazing….!!

But this happened in real; USA and Canada witnessed two suns in the sky during sunset. It is miracle for many but there is a science behind it.

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Of course we have only one sun in our solar system, so another one in this picture is Moon. Due to change in orbit Sun sets and Moon rises at same time in opposite direction. The Moon reflects light from Sun and it seems another Sun in sky. This phenomenon is known as “The Hunter’s Moon”.

There are many phenomena that occur on Sky, we have listed few of them –

1) Light Poles

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This phenomenon is known as ‘light poles’ and it can be seen at nights over the large cities with different colored lights. They can only be seen during very cold weather (the temperature of -20 Celsius degrees or lower). Also the wind must not blow fast and there has to be a plenty of tiny ice crystals in the atmosphere. That is why you don’t see this so often.

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2) Lenticular Clouds

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They are stationary lens-shaped and sometimes multi-layered clouds that form at high altitudes. They are formed when moist air is forced to flow upward around mountain tops. Due to their shape, they have been offered as an explanation for some UFO sightings.

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3) Skypunch

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A fallstreak hole, also known as a hole punch cloud, punch hole cloud, skypunch, canal cloud or cloud hole, is a large circular or elliptical gap, that can appear in cirrocumulus or altocumulus clouds. Such holes are formed when the water temperature in the clouds is below freezing but the water has not frozen yet due to the lack of icenucleation particles. When ice crystals do form it will set off a domino effect, due to the Bergeon process, causing the water droplets around the crystals to evaporate: this leaves a large, often circular, hole in the cloud.

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4) Fire Rainbows

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The fire rainbow is the rarest of all naturally occurring phenomena. The clouds must be cirrus and at an altitude of 20,000 feet at least. There must be just the right amount of ice crystals present, as well.

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5) Sun Dogs

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Rainbows aren’t the only atmospheric delights. Here we see a triple sunrise as photographed near Green Bay, Wisconsin, on Sept. 23, 2006. This was when the sun was rising due east on the Equinox. But these weird apparitions are actually more common than rainbows. “Produced by sunlight shining through common atmospheric ice crystals with hexagonal cross-sections,” NASA writes, “such halos can actually be seen more often than rainbows.” The two images on the right and left of the central sunrise are sundogs, which are extra-images of the sun created by falling ice crystals in the atmosphere.

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6) Halo

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There are many types of ice halos. They are produced by the ice crystals in cirrostratus clouds high (5–10 km, or 3–6 miles) in the upper troposphere. The particular shape and orientation of the crystals is responsible for the type of halo observed. Light is reflected and refracted by the ice crystals and may split up into colours because of dispersion. The crystals behave like prisms and mirrors, refracting and reflecting sunlight between their faces, sending shafts of light in particular directions.

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