2000-07-10 - Milwaukie, OR - Light

I was going out to roll up windows in car. Just stepped one foot onto porch when this bright light caught my eye in the sky. It was white like a very bright full moon with a tail traveling over the top of my hourse at very high speed. I estimate it visually to be about 5 feet across with maybe 8ft. long tail. It seemed to be only a few feet above the electrical wires running down the street. When it got over the wires it vanished as quickly as it appeared. It seemed to be a solid mass as you could not see through any part of it. The sky was extremely clear that night and this object made no sound.My house is located on the south side of the street. If you have any idea as to what this was please email me at saj50@aol.com. I am very huanted by what I saw and need a logical explanation of this bright round light with a tail which went zooming over my house and the vanished into thin air.