If we all take our heads out of this great and wonderful "thunder box" (excuse the pun.......we've made it that way, though, right?) we live in, could it be true that, with all things considered, "gravity" is the primary "cause" of the effect we know as wind?
What would happen for instance to "dust" in space........?
Would it be attracted to a "Planet" and represent a type of flowing windy landscape of any such an atmospherical (as it would seem to life-forms on that rock) "thing"?