Black Chevron shape about 150 feet above me, all noise and sound ceased.I was hanging washing on the cloths line and for some reason I looked up. Maybe 100 feet above the tree tops in the back yard a deep black chevron shape was very slowly moving from W to ENE. Everything around was very still and quiet and the shape made no sound that I could here. It was a cool clear night and there were stars in the sky. As the shape moved (very slowly) it blocked the light from the stars that were directly behind it. I looked back and forth at the washing and then back at the shape several times thinking this was a odd experience more so because I remember thinking that I wasn't scared at all just curious. After about 3 minutes, it moved out of my view behind the trees. I note that we own a dog as do the neighbours behind and to either side of our house. They were barking in an agitated manner before the event and again after, it however seemed that there was no sound at all during its pass over me.