Nocturnal observations sometimes include aerial phenomena characterized by intermittently illuminated crimson signals. These occurrences often manifest as repeating on-off sequences in a distinct hue, localized within the atmospheric space above the observer. Examples might include reflections off high-altitude contrails, or the navigation lights of aircraft operating during nighttime hours. This includes, but is not limited to, commercial airlines, private planes, or unmanned aerial vehicles performing various tasks.
Understanding the source of these visual events is beneficial for air traffic safety and management, as well as for mitigating public concern related to unusual atmospheric sights. Historically, such occurrences have fueled speculation about extraterrestrial activity or unidentified flying objects. A rational explanation and identification of the sources often reduces anxiety and allows for the accurate tracking of aerial movements within monitored airspace. Properly identifying these lights allows tracking, especially when they are in controlled airspace.