A small light flew accross the night sky at tremendous speed.July 31st and on August 2, 2010, both at approxiamately 21:45 hrs, a small white light (the intensity of Polaris) moved rapidly accross the sky about 25 degrees above the horizon due south from Hanover, Ont.I observed it crossing about 40 degrees of the sky in a west to east direction. It covered this span in 4 to 5 seconds. I have observed many planes and satellites over the years and nothing ever came close to this speed.There were no flashing lights, just the steady glow resembling a regular satellite.I could not estimate its' distance away. The sky was clear and many other stars were visible at the time. Many air routes pass by here so I am well aware of airplane lights.