Silent Glowing Orange Sphere Moving in a Straight Line Witnesed Over Traverse City, Michigan.I took my dog outside at 11:05 PM and was looking up in the night sky (a clear night, no wind) and witnessed a glowing orange ball of light moving fairly fast across the night sky over the Holiday Hills area of Traverse City, MI. It was a single orb, glowing solid orange, and it moved steady and fairly fast. I witnessed it pass over from the treetops on my left to the treetops on my right cross the sky in a straight line.Because I did not have any other object to compare it with it is hard to tell what the altitude was, but it was not that high up in the air. It looked to be fairly low to the ground (no more than a few thousand feet). It emitted no sounds that I could hear.This was a distinctive ball shape ... not just a point of light. It did not flicker, change colors, etc. It remained constant in brightness and was distinctively orange.I've seen many satellites, the ISS, northern lights, shooting stars, and so on. I've been a lifelong observer of the night sky. I've never seen anything like this. Furthermore, I hold a Ph.D. in philosophy, teach critical thinking, and am a skeptical person by nature. This was a really unique experience for me.