My back porch faces the west towards the mountains. I can see alot of the sky facing west. About 3 wks ago I was smoking on the back porch and noticed a really bright star. As I was watching it,it moved to the n.about 3 inches. As I continued watching it moved straight down about 4 inches continued to stop and go in various directions- up, down,north,south and diagonal. It will be still for 10-15 seconds and then move usually very fast. Sometimes slow. I have seen it EVERY night over Arvada,Broomfield and Westminster,all nieghboring cities.I can go back out an hr later and it will be there in basically the same area of the sky. But everynight I see it over 1 of these 3 cities.Tonight it had been rainy all day and cloudy so I didnt think I would see it,but I did-2 of them! It was so cloudy I couldnt see any stars but I could see the same light zipping all over the sky. It was harder to see tonight because of the clouds,but it was there. I saw 2 of them tonight being very active, moving 6 to 7 inches at a time- all different directions. IT IS NOT A STAR OR A PLANE OR A HELICOPTER OR A SHOOTING STAR. I AM NOT AN IDIOT!!! My daughter and her friend have seen it too and they report seeing some lights changing from green. yellow and blue. On clear nights I can see illuminating light lighting up the sky around it. I watch it everynight and want to know what it is and aren't other people seeing this too? I could watch it for hrs but my neck gets sore lol. I don't have a good camera so I have not been able to tape it, but I will be watching everynight.