Answer:

supernova

Answer	Crossword Clue
SUPERNOVA	Great old Chevy?
SUPERNOVA	Major celestial event
SUPERNOVA	Stellar spectacle.

SUPERNOVA	Exploding star
SUPERNOVA	Luminous stellar explosion
SUPERNOVA	Fabulous deli delicacy?
SUPERNOVA	Crab Nebula origins

Crossword

a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.