S.T.E.M

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Across
  1. 2. waves of wavelengths stars give off showing different colors
  2. 5. color,temperature,size,composition,and brightness
  3. 7. has a bulge in the middle and arms that spiral outward
Down
  1. 1. no regular shapes,bright young stars
  2. 3. measure of the amount of light a star gives
  3. 4. round or flat circle or flattened balls,only old stars
  4. 6. device that allows us to witness the waves that stars emit