Answer: SSTAR

AnswerCrossword Clue
SSTARComparatively cool red giant
SSTARRelatively cool red giant
SSTARRed giant in the night sky
SSTARSlow-burning heavenly body
SSTARRed giant
SSTARRelatively cool heavenly body
SSTARAstronomical red giant
SSTARSpectral type
SSTARA spectral type
SSTARChi Cygni, for one
SSTARCool red giant
SSTARCelestial cool red giant
SSTARCertain astronomical classification
SSTARRed giant of the galaxy