Crossword clues for the word: NSTAR The word NSTAR has appeared as an answer to at least 5 crossword clues on different crossword puzzles. Crossword clues for NSTAR Showing 1 to 5 of 5 results Clue(s) "Cool, very red celestial body" Heavenly body of the very red type. Many an old red giant Sky spectral type Very red heavenly body