A Smoke Angel from Airplane Flares
Credit: Russell E. Cooley IV, USAF

Explanation: What type of cloud is that? It is not a naturally occurring one. Looking perhaps a bit like a gigantic owl monster, the cloud pictured above resulted from a series of flares released by an air force jet over the Atlantic Ocean in May. The jet that released the flares, a C-17 Globemaster III, is seen on the right. The flares release smoke and the resulting pattern is sometimes known as a smoke angel. The circular eyes of the above smoke angel are caused by air spiraling off the plane's wings and are known as wingtip vortices.

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The above explanation came with the picture on the Nasa site.

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Mysterious patterns and shapes in the sky
Mesmerize and delight the naked eye
Though there is some fact in explanation
I think it's a supernatural Deity creation
A mere accident of nature couldn't define
What surely looks like intelligent design

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Remind you of another argument;)?
I like to stir up controvrsy ,do you think flares by themselves could have made that design?

ET-2008