Hey guys, check out this ancient box puzzle I made!

Q: An archaeologist finds a locked 2,000-year-old box, no key, only 3-buttons labeled A, B, and C, each button has a Latin inscription: A-{Sol}, B-{Luna}, and C-{Stella}. Pushing any button doesn't open it. How does one unlock this ancient box without damaging it?

Ask me yes/no questions to solve the puzzle!