I was sitting on my deck at the back of my house. I was having a cigarette and looking at the stars. From the corner of my roof to behind my neighbours roof I saw a bright light. It was solid, bright and travelled faster and lower then a plane. There was no noise, it just zipped past. I got up to see if I could see if it went past the roof or higher up. Then it zipped past going in the opposite direction. At first I thought, what did I just see. Then when it flew back I thought, I think I just saw a UFO. I was stunned, I've never seen anything like that before. We have planes flying over all the time but I can see the lights flashing. This light never flashed. I lost sight because of being at the back of the house.