Answer: supernova

AnswerCrossword Clue
SUPERNOVAGreat old Chevy?
SUPERNOVAMajor celestial event
SUPERNOVAStellar spectacle.
SUPERNOVAExploding star
SUPERNOVALuminous stellar explosion
SUPERNOVAFabulous deli delicacy?
SUPERNOVACrab Nebula origins
supernovaA star that suddenly increases greatly in brightness because of a catastrophic explosion that ejects most of its mass
supernova(Latin) a very brilliant nova resulting from an explosion which blows the star's material into space, leaving an expanding cloud of gas