Answer: quasars

AnswerCrossword Clue
QUASARSHighly luminous cosmic objects
QUASARSLuminous cosmic objects
QUASARSDistant starlike objects
QUASARSStarlike objects
QUASARSHeavenly radiators
QUASARSCosmic rarities
QUASARSSpatial wave senders.
QUASARSStarlike, celestial objects
QUASARSSome TV's
QUASARSSome radio sources
QUASARSStellar phenomena
quasarsQUASAR, a starlike object which emits radio waves
quasarsany of a class of celestial objects that resemble stars but whose large redshift and apparent brightness imply extreme distance and huge energy output