Solar System

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Across
  1. 3. the process of a dying star
  2. 4. brightest star in the night sky
  3. 5. stellar core left of a star after it has died
  4. 7. place in space where gravity pulls so much nothing can get out
  5. 9. cloud of hydrogen gas
  6. 10. group of stars that can create a shape
  7. 11. nebula flattened disk of gas and dust
  8. 12. measures radiation at regular intervals
  9. 13. the force between objects and in space
  10. 14. amount of matter in an object
  11. 17. colossal explosion of a star
  12. 19. objects in space that can be made of dust and small ateroids
  13. 20. tool to show a stars temperature
Down
  1. 1. matter that does not change unless affected by external force
  2. 2. how bright an object would be if seen from measured distance
  3. 6. how bright and object appears in the sky from earth
  4. 8. two stars that orbit around a center of mass
  5. 11. the kind of galaxy the milky way is
  6. 15. ball of ice and dust that orbits the sun
  7. 16. rocky objects that orbit the sun
  8. 18. displacement of an object caused by observers view