Answer: sstar

AnswerCrossword Clue
SSTAR

Comparatively cool red giant

SSTAR

Relatively cool red giant

SSTAR

Red giant in the night sky

SSTAR
Slow-burning heavenly body
SSTAR
Red 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