Stars and Stuff

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Across
  1. 2. the next stage in life for a red giant star
  2. 6. the next stage in life for a white dwarf
  3. 7. a stellar object which light cannot escape
  4. 9. the brightness of a star at a standard distance from Earth
  5. 11. a neutron star
  6. 12. where Luke Skywalker lived
  7. 15. the brightness of a star as seen from Earth
  8. 16. a star system with two stars
  9. 17. the next stage in life for a supergiant star
Down
  1. 1. a supergiant star
  2. 3. a planet outside our solar system
  3. 4. apparent change in position when viewed from different positions
  4. 5. the name of our galaxy
  5. 8. a person who does science as a hobby
  6. 10. the lifestage of our sun
  7. 13. a large amount of gas and dust in space
  8. 14. Galaxies with giant black holes in the center