Every night , in the same direction in the sky, these balls of light form out of nowhere, one every maybe ten to fifteen seconds apart, and travel a short distance before fading out and all in the same area. One even seems to split into two separate balls of while drifting apart. I thinks it's interesting because sometimes they go from bottom to top and other times they go side to side but always, and I mean always in this same area in the sky. Sometimes if there is a lot, you'll start to see "blinking" air craft appear randomly headed in the direction of the lights.