Technique used to determine the composition of stars

Technique used to determine the composition of stars
Crossword Clue
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Answer	Crossword Clue
SPECTRUMANALYSIS	Technique used to determine the composition of stars

Crossword

a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.

Technique used to determine the composition of starsCrossword Clue