We see clouds almost daily. they are of different shapes and sizes, mostly depends on what all people can imagine them to be.. but have you ever seen some thing like this before. ?
Beautiful! isn’t is?
This is called Irisation caused by diffraction of sunlight by the clouds.
It is also sometimes mistaken for a UFO in fact many of the alleged UFO sightings turn out to be such shaped clouds or shadows only.
this one here looks pretty much like a UFO
While flight pilots try to avoid these clouds because of the radio disturbances caused by them, gliders often seek for them as they produce a smooth and strong wave lift which helps gain high altitude.