What are the Marfa Lights?

The Marfa lights, also known as the Marfa ghost lights, have been observed near U.S. Route 67 on Mitchell Flat east of Marfa, Texas, in the United States. They have gained some fame as onlookers have attributed them to paranormal phenomena such as ghosts, UFOs, or will-o'-the-wisp. Scientific research suggests that most, if not all, are atmospheric reflections of automobile headlights and campfires.

According to Judith Brueske, "The 'Marfa Lights' of west Texas have been called many names over the years, such as ghost lights, weird lights, mystery lights, or Chinati lights. The favorite place from which to view the lights is a widened shoulder on Highway 90 about nine miles east of Marfa. The lights are most often reported as distant spots of brightness, distinguishable from ranch lights and automobile headlights on Highway 67 (between Marfa and Presidio, to the south) primarily by their aberrant movements."

Robert and Judy Wagers define "Classic Marfa Lights" as being seen south-southwest of the Marfa Lights Viewing Center (MLVC). They define the left margin of the viewing area as being aligned along the Big Bend Telephone Company tower as viewed from the MLVC, and the right margin as Chinati Peak as viewed from the MLVC.