This sighting was probably not worth reporting except for the Shuttle disaster happening so soon after.I was driving and noticed 3 aircraft with short contrails to the southwest just above the horizon. The sun was already below the horizon but the sunlight lit up the contrails a brilliant white. The clear sky had a reddish hue near the horizon. The three aircraft were flying different directions and the three flight paths formed a triangle. I then noticed a very bright light in the center between the three planes. The light was circular and apparently motionless and seemed to be the same altitude as the planes. The light had no contrail. The planes were so distant that I observed no motion[only over a period of time as with a clock's minute hand]. This event occurred approximately over where Texas,Louisiana,and Arkansas meet, near where the debris from the Shuttle Columbia fell about 60 hours later.