Some sky lights, in brief

UFOS

Mysterious flying objects often spotted but rarely confirmed by officials.

"Some sky lights, in brief" hints at objects seen in the sky that glow or shine, often described as unidentified. The word "lights" suggests something luminous, while "in brief" signals the answer is an abbreviation. "UFOS" fits perfectly—it’s short for Unidentified Flying Objects, which are commonly associated with mysterious glowing sights in the sky. The clue plays on the literal meaning of "lights" while nudging toward the well-known acronym.