Galaxies and the electromagnetic spectrum

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Across
  1. 4. youngest galaxy
  2. 7. helps us know the temperature, size, and age of a star
  3. 9. structure and motion
Down
  1. 1. dust between stars
  2. 2. stars behind clouds of dust
  3. 3. structure and evolution of the universe
  4. 5. middle aged galaxy
  5. 6. oldest galaxy
  6. 8. how fast the universe is expanding