If these things are in some sense alive, and seemingly exist even in space above our atmosphere, they could very well be common throughout the universe, and perhaps at least some of them are intelligent. We can only speculate as to their composition and structure; Biologist Rupert Sheldrake has suggested that our familiar life forms may owe their structure and development to "morphogenetic fields" which form a kind of paranormal template. Could such fields exist in our atmosphere and even beyond, giving structure to various substances like air, water, or the thin wisps of gas in the near vaccum of space?
If so, the universe may be teeming with such creatures, an idea suggested by the late British author C.S. Lewis.