Caelum Incognitum — The interactive encyclopedia of ufology
Meteors and fireballs
Explanations & misidentifications
Light streaks produced by fragments of matter entering the atmosphere. Fireballs, brighter, can light the sky, break up and appear to follow a slow, silent trajectory. Many waves of sightings (the 1946 ghost rockets, Tehran 1976…) have been linked to these objects.