LOT SKY PHENOMENON

List of twelve phenomenon you can see in the sky.

#12
Tornado 

 A tornado is a violent, dangerous, rotating column of air that is in contact with both the surface of the earth and a cumulonimbus cloud or, in rare cases, the base of a cumulus cloud. They are often referred to as a twister or a cyclone.


#11
Belt of Venus

The belt of Venus is a phenomenon that occurs during dusty evenings when a band of pinkish or brownish sky will appear between the sky and the horizon.

#10
Sun pillar 

 A sun pillar is a visual phenomenon created by the reflection of light from ice crystals with near horizontal parallel planar surfaces.

#9
Fallstreak hole

A fallstreak hole is a large circular 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 ice nucleation particles. When a portion of the water does start to freeze it will set off a domino effect, due to the Bergeron process, causing the water vapor around it to freeze and fall to the earth as well.
#8 
Mammatus
Mammatus or mammatocumulus is type of cloud usually composed of ice, but also can be a mixture of ice
and liquid water or be composed of almost entirely liquid water.


#7
Aurora Borealis

 Aurora borealis is a natural light display in the sky particularly in the high latituderegions, caused by the collision of energetic charged particles with atoms in the high altitude atmosphere.
In northern lattitudes the effect is known as the aurora borealis, and in southern it is called aurora australis.


#6
Noctilucent Clouds

 Noctilucent Clouds are tenuous cloud-like phenomena that are the "ragged-edge" of a much brighter and pervasive polar cloud layer called polar mesospheric clouds in the upper atmosphere, visible in a deep twilight. They are made of crystals of water ice.They are most commonly observed in the summer months at latitudes between 50° and 70° north and south of the equator. They are the highest clouds in the Earth's atmosphere, located in the mesosphere at altitudes of around 76 to 85 kilometers.


#5 
Eclipse 

 An eclipse is an astronomical event that occurs when an astronomical object is temporarily obscured, either by passing into the shadow of another body or by having another body pass between it and the viewer.
The term eclipse is most often used to describe either a solar eclipse, when the Moon's shadow crosses the Earth's surface, or a lunar eclipse, when the Moon moves into the shadow of Earth.
#4
Fire rainbow

Fire rainbow or circumhorizontal arc is optical phenomenon and it is part of the halo phenomenon.
Sometimes, when the halo is small or patchy, only fragments of the arc are seen and that is called fire rainbow.
Fire rainbow is relatively common in United States but in northern Europe is very rare.

#3
Halo 

 A Halo is optical phenomenon  produced by ice crystals in cirrus clouds creating colored or white arcs and spots in the sky. There are many types of Halo and they can be seen in the day or night.


 #2
Green flash

Green ray or green flash is optical phenomenon that can be seen shortly after sunset or before sunrise
It lasts for second or two.The reason for green flash optical phenomena lies in refraction of light in the atmosphere : light moves more slowly in the lower, denser air than in the thinner air above, so sunlight rays follow paths that curve slightly, in the same direction as the curvature of the Earth.

#1
Moon bow

Moon bow (lunar rainbow, lunar bow, white rainbow) is a rainbow produced by light reflected off the surface of the moon. Moon bows are much rarer then sun rainbows and can be only seen when the moon is low and very bright. Few places in the world witnessed this phenomenon like Yosemite National Park,Cumberland Falls, Victoria Falls.