Imagine the cloud, as a large moving body of small particles in outer space. The cloud is formed of dust in space that comes from the formation or destruction of planets, stars, comets or other interstellar objects. A visible body of a cloud reminds you some kind of organic shape. Especially if you know about microscopic traces of organic life on these particles. Some friends of mine found the similarity with urban landscape or with foam brought on the sand by sea wave. I’m o.k. with their interpretations. As far picture reminds people somethig - it works. (About 100 tons of space dust fall on the Earth every day. - en.wikipedia.org/wiki/Space_dust)