Black Holes and Neutron Stars

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Across
  1. 3. abyss
  2. 5. center of a black hole
  3. 7. supposedly discovered with an apple
  4. 8. star explosion
  5. 9. almost the speed of light
  6. 12. rapidly rotating neutron star
  7. 14. emission of energy as waves
  8. 15. minimum speed to leave gravity
  9. 17. a concept in a 4D continuum
  10. 19. rotating disk of matter
Down
  1. 1. remnant star after supernova
  2. 2. most energetic form of light
  3. 4. bigger than a supernova
  4. 5. mass of the sun
  5. 6. state of matter
  6. 10. extremely magnetic neutron star
  7. 11. center of a star
  8. 13. occurs in low mass x-ray binary systems
  9. 16. edge of black hole
  10. 18. made of mass