Bright Red light object with no sound moved slowly overhead from North to South

My wife and I were on our patio in Renton WA last night somewhere between 10:30P.M. and 11:00P.M. We both saw this bright red light coming from the North headed South.  It appeared to be moving very slow as it took a long time to finally reach us. When directly overhead we realized there was absolutely no sound.  I surmise that whatever it was, was much higher than an airplane. It continued to head directly south.  I am wondering if it might have been a drone, but I don’t know if a drone would put off such a bright red light. The lack of any noise as it was directly over my head leads me to believe it was actually very high in the sky.  The light was a very intense red and I am surprised if there weren’t other sightings of whatever this was.  I have never seen anything like this before and do not think it was a satellite.