It was a black triangle moving across the night sky with 3 lights forming a triangle, when it banked and suddenly it was gone.We were out stargazing, when one of us noticed a triangle shape moving across the night sky, it had three lights forming a triangle and it would block out the stars as it moved past them the shape was black and didn't make any noise., we where on the top of a hill in southern Utah, we were on a trip to see a national park down there. After watching the shape four about 10 mins, it banked and turned, and then was gone just as fast as it had come.