Space Trivia (CrossWord)

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Across
  1. 2. Luminous galactic nucleus
  2. 5. Sun's visible surface
  3. 7. Dense star remnant
  4. 8. Rotating neutron star
  5. 9. Gravity well
  6. 13. Infinite spacetime curvature point
  7. 14. Star system
  8. 15. Extremely large star
  9. 16. Distance light travels in a year
  10. 17. Light wavelength increase
  11. 18. Study of the universe's origin
  12. 19. Space rock
Down
  1. 1. Study of celestial objects
  2. 3. Exploding star
  3. 4. Invisible universe mass
  4. 5. Astronomical distance unit
  5. 6. Study of stars' physics
  6. 10. Planet orbiting another star
  7. 11. Four-dimensional continuum
  8. 12. Neutron star with a strong magnetic field