Bright spherical object with contrail disappears while being watched.Watched a bright, spherical light with a long contrail for a few seconds. It didn't seem to move. While wondering if it was a plane at a very high altitude or not, it disappeared. The odd part is that the contrail disappeared at the same time. We see planes and contrails all the time, but even when the plane disappears due to angle of reflection, the contrails remain.