Answer: bstar

AnswerCrossword Clue
BSTAR

Rigel, for one

BSTAR

Massive, relatively hot luminous body

BSTAR

Rigel or Spica

BSTAR
Constellation component
BSTAR
Blue spectral type.
BSTARSpectral type, in astrophysics.
BSTARSpectral body
BSTARSpectral type
BSTARIt's massive and relatively hot
BSTARBright sky sight