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Across
  1. 1. Explosion of a star
  2. 6. Region of rocks between Mars and Jupiter
  3. 10. Small rocky body in space
  4. 13. Range of light wavelengths
  5. 17. Region of intense gravity
  6. 19. Path around a celestial body
  7. 20. Object orbiting another
  8. 22. Cloud of gas in space
  9. 23. Bright distant object in space
  10. 24. Rock from space on Earth
  11. 25. Rock burning in Earth's atmosphere
Down
  1. 2. Celestial body orbiting a star
  2. 3. Related to the Sun
  3. 4. Related to the Moon
  4. 5. Distance light travels in a year
  5. 7. Blocking of light
  6. 8. All of space and time
  7. 9. Icy body with a tail
  8. 11. Large system of stars
  9. 12. Force attracting objects
  10. 14. Natural satellite of a planet
  11. 15. Particle of light
  12. 16. Luminous ball of gas
  13. 18. Rotating neutron star
  14. 21. Instrument for viewing space