Related Clues:

• Sky sightings
• Cause of many calls to the police, often
• Venusian vessel?
• Popular tabloid subj.
• Night light?
• Martian rover?
• Saturnian ship, e.g.
• Alien bearers
• E.T.'s craft
• Faraway craft
• Some unexplained sightings
• Sci-fi sightings
• One evidently not filing a flight plan
• It could be created by swamp gas
• Radar anomaly