I was amused when, upon review, I saw how the clue at 1A ("Latin stars") could be interpreted more than one way, but when I was solving the puzzle, I didn't think twice about it and dropped in ASTRA. I'm not sure what the collective noun is for famous people from Latin countries, but if there's any order to this universe, whatever the correct word is, it's five letters long. Kicking off the grid with ASTRA and visually ending the puzzle with HUNTER ("Orion, for one") supplies some possible bonus material. We've got TITAN and LUNA in there, too, giving the whole thing a certain ELEGANCE.
OTH, the grid gets a little SQMI around the middle (IAMS, SEG, AAA), but our sun is going to supernova one of these days anyway, so who cares?
I finished with at time of 21:21, which, even though I know that the answer to life, the universe and everything is 42, I still feel the number must have some cosmic significance, if only I can solve the equation. Maybe if I CUBIT?