Hovering Bright white light overhead then disappears

While camping and settling under the open sky for bed. We were star-gazing at the sky. A super bright, circular light suddenly appears overhead and lit up the area. There were not any beams, the light just illuminated everywhere. We sat watching the light. It appeared to be stationary, hovering in place. We did not hear any sounds coming from it. It was well above the tree line. After a short time, it began to move very slowly south and then quickly turned off. We did not see it the rest of the night.