My wife and I were sitting outside on our patio on 4/25/11 at 9:52pm when we saw a rectangular shaped object that caught our attention as it appeared in the distance and soar silently from southeast to northwest. It is difficult to estimate the size or how high it was. The view was unobstructed.The object could be seen clearly and it was not rotating, making noise or illuminated. My wife believes it was roughly 200��� x 200��� and was flying at roughly 1500���. I believe it was much larger and was flying closer to 1 mile. The object appeared to be in a liquid state, such as the chemical mercury, but it retained its parallelogram shape throughout the sighting. It appeared to only be reflecting the lights from the ground, and had no lights on the craft itself. The object had a "digital" camouflage appearance of a circuit board or other layered pattern. It was dark outside with few clouds and the stars were shining brightly. The object made no noise and flew in a straight line and was faster than any aircraft I have ever personally seen. We live in an area with little surrounding lights from our community. Neither my wife nor myself have ever seen anything like this and have never witnessed any unidentified object.