I start opening at 0615hrs mon-fri and while opening the back gate of my place of work I herd a dog barking not that I have not herd it before but there was something different about the dog it would bark then whine it cased me to look in that direction not seeing the dog I panned back toward the gate my eyes caught what looked like the stars rolling it took a second for my eyes to adjust to what I was seeing ....this is harder than I thought to say but I saw a huge circle black as the night the stars could be seen through it and on the sides they would role "the stars" giving away its shape it looked huge and not very far away the rolling stars on its edges showed it slowly moving south west and upward I pulled my phone out and tried to film it but could not activate the camera when I looked back at it was gone I mean from around 100 feet to gone I wanted to say something to my coworkers but its hard even now to tell what I saw I know it was huge reflected stars through it but not anything under it like street lights you could see it was round for as it moved stars would role like a moving mirror