I looked out window at the sky and saw a large low flying grey oval that crossed over Gold St traveling towards Route 24 - Stoughton

It was traveling leisurely and after it went by the window, I tried to see it again through other windows in my house but by the time I ran into the other rooms, I was unable to locate it again and we also have trees on our property that also blocked some views.The weather was rainy so the sky appeared as white and the oval was easily seen against the white sky. From what I could determine it appeared that the grey oval was traveling pretty low and it was large in size. I did not hear anything as I have my windows closed and an air purifier going in my room.