I was driving north on rt 413 in Bucks County 5-10 minutes from Newtown, PA. Looking at sky because of all of the chemtrails that morning. Saw object right between chemtrails that formed a perfect Z, which I noticed after the object disappeared. Only saw object for about 5 seconds, it didn't move, just disappeared. It looked like there were windows on the side., half sphere shaped, flat side facing down. It looked white, and shiny, reflected the sunlight. I stopped the car and watched for it to reappear for a few minutes. I wanted to see it again, maybe get a picture. I had been taking pictures of the sky from my car and from the parking lot of a bakery that I had gone to. I do that because of the chemtrails, I have a facebook page regarding geoengineering and chemtrails, and participated in a march against them. Try to get people to learn about them. I knew after a second or two that it was a UFO. First I thought it might be a plane. But it wasn't moving and didn't have wings.