It was 7:30 mt and i just headed out to walk my dog. looking south, facing denver's city park golf course, i thought i saw the light of the moon behind clouds, but noted it's not where the moon would usually be at that time. since it wasn't the moon, i kept staring at it, trying to figure out what it was. the object didn't have distinct edges at first, and appeared vapor-like, and cigar shaped. it was very clear out and i could see many stars to the east, and everywhere around the object was clear, so the cloudy look of it didn't make sense. i kept my eye on the object as i walked east to see if it moved, and it first it didn't seem like it moved, then i stood still and watched it move behind a tree, then it took the shape of a triangle pointing like this < and two tails came out the ends that faced west. i watched it, as cars passed me by on the street. i was very curious what it was. i walked 50 ft to the intersection and by the time i got there (still keeping my eye on it) it was gone. it was a glowy white/pale yellow color, and the whole thing had soft edges. it seemed to be as far away as the moon would be.