Bright and Powerful Supermassive Black Hole
Puzzle 20 of Venice Pack
Question is: Bright and Powerful Supermassive Black Hole
and the answer is: QUASAR
Word Meaning:
QUASAR — (astronomy) An extragalactic object, starlike in appearance, that is among the most luminous and (putatively) the most distant objects in the universe.
Definitions from Wiktionary.