I walked oitside to go to the store and glanced up to see the stars, there was a flying wing shaped craft directly overhead slowly flying northward....At approx. 50 mph. it was at approx. 1000 ft elevation and between 200 and 250 foot wingspan. it had no lights and made no noise. the leading edge of the craft was black and the underside was a dark grey. it was in my sight for about 10-15 seconds until my view was obscured by trees.