On June 3, 2006, This beautiful and very rare rainbow of nature was seen over the State of Idaho near the Washington State border. — But what looks like a flaming rainbow is actually called a circumhorizontal arc as far as meteorologist are concerned!

This phenomenon is caused by light passing through cirrus clouds at altitudes and the sun shines through them when it is high in the sky about 58* above the horizon. To make everything even more complexed, the hexagonal ice crystals that form cirrus clods must be shaped like thick plates with their faces parallel to the ground.

What's more, the hexagonal ice crystals that make up cirrus clouds must be shaped like thick plates with their faces aligned with the ground. Next, light must enter through a vertical face of an ice crystal and leave from the bottom face, it refracts or bends and if everything aligns just right, the beautiful Fire Rainbow appears!

This sighting of a circumhorizontal arc or Fire Rainbow lasting nearly an hour and covered the span of several hundred square miles of sky.

The Aurora Borealis is formed by an interaction between the Earth's magnetic field and solar wind.

Auroras are produced by the collision of charged particles from Earth's magnetosphere, mostly electrons but also protons and heavier particles, with atoms and molecules of Earth's upper atmosphere (at altitudes above 80 km (50 miles)). The particles have energies of 1 to 100 keV. They originate from the Sun and arrive at the vicinity of Earth in the relatively low-energy solar wind. When the trapped magnetic field of the solar wind is favorably oriented (principally southwards) it connects with Earth's magnetic field, and solar particles enter the magnetosphere and are swept to the magnetotail. Further magnetic reconnection accelerates the particles towards Earth.

The collisions in the atmosphere electrically excite electrons to take quantum leaps (a mechanism in which the electron's kinetic energy is converted to visible light); and molecules in the upper atmosphere. The excitation energy can be lost by light emission or collisions. Most auroras are green and red emissions from atomic oxygen. Molecular nitrogen and nitrogen ions produce some low level red (pink) and very high blue/violet auroras. The light blue and green colors are produced by ionic nitrogen and the neutral helium gives off the purple color whereas neon is responsible for the rare orange flares with the rippled edges. Different gasses interacting with the upper atmosphere will produce different colors, caused by the different compounds of oxygen and nitrogen. The level of solar wind activity from the Sun can also influence the color and intensity of the auroras. 

http://en.wikipedia.org/wiki/Aurora_(astronomy)

During spring in Denmark, Just before sunset, if you look up in the sky you will see flocks of more than a million European starlings (sturnus vulgaris) gathering together. They form incredible formations as they migrate from the.south. This phenomenon is called Black Sun (in Denmark), and can be witnessed in early spring throughout the marshlands of western Denmark, from March through to the middle of April.

The Moonbow is not a phenomenon that you can see every day. It is possible to see it though on a clear night within a few days of a full moon. When the moonlight is refracted through the mist rising up from the base of the waterfall and everything comes together perfectly, the sight is amazingly beautiful. 

A rainbow is an optical and meteorological phenomenon that causes a spectrum of light to appear in the sky when the Sun shines onto droplets of moisture in the Earth's atmosphere. They take the form of a multicoloured arc, with red on the outer part of the arch and violet on the inner section of the arch.

A rainbow spans a continuous spectrum of colours; the discrete bands are an artifact of human colour vision. The most commonly cited and remembered sequence, in English, is Newton's sevenfold red, orange, yellow, green, blue, indigo and violet. Rainbows can be caused by other forms of water than rain, including mist, spray, and dew.

Wikipedia definition.

God has blessed us with many beautiful things on this Earth. We can including these Phenomenon among those blessings. It is amazing how intricate the details of some of these Phenomena must all come together at just the right times to create the beauty that they do. Only God could create such a complex working system!