Enormous V-shaped formation consisting of inter-connecting puffy objects traveling very fast.Sky was black with a few wispy clouds scattered about, moon low in the east, stars were out. FROM NOWHERE, there appeared in the sky what looked like a gaggle of geese formed in a V, traveling west to east VERY fast, no engine sounds, no bird sounds. Hard to describe - like individual puffs of smoke semi-connected to one another. It's length took up 1/3 the span of the sky, it's width between the two points of the V was enormous. If this were actually a gaggle of geese there would easily have been 75 to 100 of them. As this formation flew across the sky it seemed to lose its length at the widest points of the V and then it DISAPPEARED. I'd love to know if anyone else spotted this phenomenon.