I saw a large silver/white glowing object moving across the horizon

I live in rural Vermont and saw this moving object in the sky when I took my dogs out early on Monday morning. I am a science teacher and have taught astronomy for years. This was nothing I have ever seen and I am baffled. The craft was large but there was no noise. I saw no wings and the craft moved at variable rates of speed along the same trajectory which seemed inconsistent with Newtonian physics. The craft looked metallic and shiny but it was too bright to determine what type of metal from a distance. I checked below that there were lights on the object but it actually seemed as if the object were glowed and emitted light all around it.