Smubbles

Are those stars? 

Why no, these are super-cool (and weird) bubbles, which appear to be made of or filled with "smoke." They dissolve in midair or the moment they touch something.

(See the cool moon sliver there in the middle of the photo?)

And they were being generated by this contraption on top of a house. I've never seen anything like these before...and I'm glad I saw them!