space crossword

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Across
  1. 1. amount of matter in an object
  2. 4. brightest star
  3. 6. giant dying star in final stage
  4. 10. spectrum radiation type range
  5. 12. contracting mass of gas
  6. 13. different views from different positions
  7. 14. to remain unchanged
  8. 16. rapidly rotating neuron star
  9. 22. magnitude measure of luminosity
  10. 23. star collapsed core of giant star
  11. 24. attraction force
Down
  1. 2. magnitude measure of star brightness
  2. 3. explosion of a star
  3. 5. dwarf faint star
  4. 7. small body of matter in space
  5. 8. nebula gaseous condensation cloud
  6. 9. diagram graph intrinsic brightness
  7. 11. celestial object of dust and ice
  8. 15. small rocky object orbiting sun
  9. 17. galaxy twisted collection of stars
  10. 18. hole space region where nothing escapes
  11. 19. star system of two stars
  12. 20. massive and remote celestial object
  13. 21. union by melting