Answer: crabnebula

AnswerCrossword Clue
CRABNEBULASupernova named for its apparent resemblance to a crustacean
CRABNEBULASky sight in Taurus
CRABNEBULASupernova remnant in the constellation Taurus
CRABNEBULAA distant galaxy
CRABNEBULASupernova remnant in Taurus
CRABNEBULARemnant of a supernova explosion