Heavenly alignment (5,7)

I believe the answer is:

total eclipse

(Other definitions for total eclipse that I've seen before include "Celestial phenomenon" , "Period of darkness" , "leaves you completely in the dark" , "Astronomical event" , "complete blackout" .)

I've seen this clue in The Times.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.