I was sitting on my couch doing something on the computer. I looked up and I saw a pulsing light in the west. I thought that it must be a star or plane. Hard to say how far away it was but I would guess that it was pretty close to Bodega Bay. I jump up and got my binoculars. When I focused in on it, I saw what reminded me of a star burst firework but much more dense and compact. At first it seemed white but then it became a white glowing with little colored spots. It started moving. It may have slowly moved horizontally first but I'm not sure.Then it very slowly sank straight down until it went behind the hills. This is my third UFO sighting. While I was watching it, I was having a incredibly hard time believing what I was seeing. Of course I was thrilled and extremely excited but in the back of my mind I was thinking that it was crazy to think that I was actually seeing a spaceship. It was too easy.I ran to get my cell phone to take a picture but by the time I got back it was gone.