Astronomy, by Kiran H. and Cove Sillero

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Across
  1. 4. Sequence Where stars spend most their lifetime
  2. 5. The distance between the crests of two waves
  3. 6. Light with a slightly higher frequency than visible light
  4. 7. The brightness of a star
  5. 9. Galaxies with a round or egg-like shape
  6. 11. A cloud of gas and dust where stars are formed
  7. 13. The center of our galaxy
  8. 14. Bang A popular theory for how our universe formed
Down
  1. 1. A galaxy with 2 or more arms
  2. 2. Used to measure distance in space
  3. 3. Class A way of classifying stars that uses letters
  4. 4. The size of a star
  5. 8. Way Our galaxy
  6. 10. Galaxies have an irregular shape
  7. 12. The unit that the temperature of stars get measured by