Mysterious sky sightings, for short

• Saucers in the sky: Abbr
• Controversial sightings
• Space opera crafts
• Alien vessels
• Subjects of some fuzzy photos, for short
• Crafts in a "close encounter of the third kind"
• Sci-fi hoverers
• Strange things floating around
• Hovering flyers

Wiktionary Word definitions in Wiktionary
n. (plural of ufo English)