Weston, Colorado is the closest major city I can conjure up that it was sighted over. It was late at night and completely dark except for a few stars and a waning moon. I was hiking back to an oil drill with some friends on a farm and when we came back to a clearing, we all noticed that basically every single animal living on the farm had followed us thru the woods and back to the clearing. 5 dogs and about the same number of cats. It was eerily still and quiet. We had also heard coyotes/wolves howling about an hour before sighting for at least 30 minutes. I glanced up at the sky and my first reaction was "wow, that is a really bright star"/"wow that one individual star is brighter than all others and putting off a LOT of light". Then I realized how much it was twinkling. I thought "okay, I know stars DO twinkle like the song but this thing is strobing".Still unconvinced it was potentially a UFO/alien spacecraft, It then began to move. back and forth. and up and down a little but mostly back and forth. I summoned 2 of my friends I was with to coo-berate this with me and they couldn't believe their eyes either! It kept moving side to side, and then disappeared/faded out. Within seconds, it reappeared in the same exact spot, moved a little more, then disappeared/faded out for good.