Chapter 22 - Stars and Galaxies

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Across
  1. 1. name of our galaxy
  2. 3. type of star cluster where the stars are tightly packed and very old
  3. 7. measures distances beyond the solar system
  4. 10. the apparent surface of a star
  5. 11. what massive stars become at the end of their life cycle
  6. 13. type of galaxy that has spiral arms and a central bulge
  7. 16. where stars live majority of their lives on an HR-Diagram
  8. 18. patterns in the sky that resemble people, animals, or objects
  9. 19. type of star that remains after a supernovae
  10. 22. color of very hot, large stars
  11. 23. process that produces heat and energy in stars
  12. 24. invisible matter that makes up 90% of the universe
Down
  1. 2. element in a star's core that causes a supernovae
  2. 4. zone of a star that is a shell of cooler hydrogen around the star's core
  3. 5. regions of strong magnetic activity on a star
  4. 6. a star's outermost layer that extends millions of kilometers into space
  5. 8. stars fuse hydrogen into _____________
  6. 9. type of magnitude which describes how bright a star appears on Earth
  7. 12. type of galaxy that contains mostly young stars
  8. 14. type of galaxy that is circular in appearance
  9. 15. a collection of stars
  10. 17. type of magnitude which describe the true brightness of a star
  11. 18. huge gas bubbles ejected from the corona
  12. 20. color of old, cool, small stars
  13. 21. a cloud of gas and dust where a star forms