Strange circular shaped craft that was all white flying in the night sky of the Allegany Mt's.I was camping with my family and everyone was sleeping. I was sitting near a fire and I was checking out the night sky.It was very clear so there were many star’s to view. At about 11:00 pm Eastern standard time I noticed a strange looking craft flying through the big dipper. My first thought was that it was just a plane. But upon further review it was shaped like a circle or a oval. The craft was all white. There were no red or blinking lights that you normally see with a airplane.I saw this craft making very quick turns and dips in the sky. I thought that my eyes were playing tricks on me so I moved away from the fire to adjust my eyes. I kept track of this object and my eyes got adjusted so I continued to view this object. The thing that made me want to report this craft was how it was making very quick turns and dips in the night sky. It flew and moved in a triangular flight path. It moved into this position in about 1 second. It did this about 10 more times.It moved back and forth between the big dipper and other stars so fast. I have never seen a object move this fast and take multiple positions in the sky. I do not think this was a plane. I have been observing the night sky since I was a child and this is the first time I have ever wanted to report an object. The other thing that caught my attention about this object was that it would move all over the sky and then go back to it’s original flight path. My observations about this object make me believe that it was very high in the sky and it was not close to me.So if possible please advise on this. If this is a standard craft then please try to tell me what it was. Otherwise I hope someone else reported this.