UFO changing color near Greenville, Ohio

Summary

A student with knowledge of astronomy observed a bright object in the west that changed from red to light red and back again every second. The phenomenon lasted about 10 minutes and disappeared below the horizon in the northwest direction. Initially considered a possible aircraft, the witness ruled this out due to the absence of standard lights and an unusual trajectory. The report includes details on location, time, and object description, but no photos or physical evidence were found. The official conclusion was that it was likely an aircraft, though the witness was not convinced.