Orange round object moving horizontally and silently over my house.I was taking out the garbage Monday night (7-14-08) at about 9:30 PM and was half way down the driveway and saw an orange glowing object which was circular in shape.It was moving silently and horizontally at about 10 to 15 MPH. It was heading south and went over my house at a height of about 30 Feet above the peak of my two story roof line.I ran inside my house and took my wife outside on the back deck of our house to see the object which was going over our house. The object continued on and went over the trees in our backyard . I ran out in the backyard to get a better look. As the object went over the trees it looked like it turned into a liquid state / form which looked like an orange waterfall and disappeared.