It was a clear cold starry night sky. I saw a distorted area of the sky traveling west to east. It is hard to describe an invisible object and almost impossible to tell how far away it was. It was as area of distorted sky moving smoothly and fast at a constant speed. Prior to this I saw two very bright stars appear and disappear in seconds in the north sky. Brighter then the other stars. It wasn't a flash just a blink.