Massive Exploding Star
This page is the CodyCross answer for the clue below from Greece, Group 678, Puzzle 5 (Monastery of Saint John).
Question is: Massive Exploding Star
and the answer is: SUPERNOVA
Word Meaning:
SUPERNOVA — (astronomy) A powerful and bright explosion of a massive star, which afterwards becomes a neutron star or a black hole, or is destroyed.
Definitions from Wiktionary.