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Hello, what's going on here then?It's a moose-demeanor
A circular rainbow spotted from a Thai Airways airliner's window The picture shows the ring-shaped spectrum against a backdrop of cumulocirrus clouds.The aeroplane?s shadow can be faintly seen in the centre of the ring, with the colours fading from blue to red around it.Rainbows are formed when sunlight strikes the curved inside of a raindrop at a specific angle and is reflected back through the water, creating a prism effect.The apparent semicircle of a normal rainbow is only limited by the horizon. The full circle could be seen if the viewer were standing on a sufficiently high cliff, although it is more easily seen from aircraft.