Science

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Across
  1. 4. a type of radiation
  2. 5. nebula gas cloud
  3. 8. an extremely dense star.
  4. 9. the merging of two nuclei
  5. 12. the weight of something
  6. 16. Pulse of radiation
  7. 17. A tools for seeing how bright a star is.
  8. 20. a star that orbits the sun
  9. 21. a type of black hole with jet beams
  10. 23. a diagram
Down
  1. 1. The apparent magnitude of an object
  2. 2. A type of meteor
  3. 3. The milky way
  4. 6. an arrangement of stars
  5. 7. a type of dwarf star
  6. 10. a type of star
  7. 11. a dying star
  8. 13. bright star
  9. 14. a big hole
  10. 15. A tool for seeing far away stars
  11. 18. Makes strong magnetic field.
  12. 19. a property of matter
  13. 22. The force holding you to the earth.