Object with glowing, sparkling tail seen traveling across the sky, disappearing over mountains.I was driving home from work shortly after 7 a.m., and witnessed a strange object. It caught my eye because it looked like a short contrail very high up in the sky, but was really bright white. Then as I watched, the "trail" became increasingly long and bright. It was traveling from N/NW to S/SE, away from the Strait of Juan de Fuca towards the Olympic Mountains. At this point, I pulled my car over to observe it more closely. There were a few other cars pulled over as well, with the people inside craning their necks like I was. By this point the "tail" was getting longer, and appeared to grow longer as the object made its way across the sky. It seemed to travel like a missile, on a steady course, but with this tail behind it that was absolutely stunning. The tail was brilliant orange by this point, and seemed to sparkle and wave, almost gossamer in appearance. This continued on for a few more minutes as it proceeded on course towards the mountains, and then disappeared from my view. When I got home to my husband and described what I had just seen, he said "that must have been a solar sail." From his description of what that is supposed to look like I agreed, but cannot find anything on the internet about a solar sail having been launched on or near that date. Perhaps this was a fireball or meteor? Whatever it was, it was absolutely incredible and I'll be shocked if no one else from the area reports it (I've heard nothing yet). I am a professional in the health care field, and work at the hospital here.