Black large silent object hovering over Fresno

Saw a large black hovering object besides school field when driving by. Object was moving East to West and not making Any sound. We watched until it was out of sight below below tree line further away. Object at first almost looked like a man shape, when video and images were analyzed looks almost like double helix shape with some sharp edges and curves. Did not resemple any type of floating balloon both witnesses have ever seen. Wasn't morphing or changing shape but object was moving positions in its orientation. It was estimated 2-300 ft from ground and was hovering and moving pretty slow above but fast enough once we honed in to escape view pretty quickly. We couldn't wrap our heads around what we were seeing. The object was roughly larger than a man but smaller than a car. About the size of your thumbnail if you held your hand up.