PLANETS

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Across
  1. 1. Way - Our galaxy.
  2. 4. - Force that keeps planets in orbit.
  3. 8. - Rocky objects in space.
  4. 11. Mechanics - Study of motion in space.
  5. 12. Planets - Mercury, Venus, Earth, Mars.
  6. 13. - Distance light travels in a year.
  7. 17. System - Sun and its orbiting celestial bodies.
  8. 18. - Interstellar gas and dust clouds.
  9. 20. - Ice and dust, long tails.
  10. 21. Belt - Region beyond Neptune, icy bodies.
  11. 23. - Orbit around the sun.
  12. 25. - Luminous celestial object, like the sun.
Down
  1. 2. Space - Space between planets.
  2. 3. - Group of stars forming a pattern.
  3. 5. - Vast collection of stars and systems.
  4. 6. - Circular path around a celestial body.
  5. 7. Cloud - Distant icy shell of comets.
  6. 9. Flare - Eruption on the sun's surface.
  7. 10. - Boundary of the solar system.
  8. 14. - Central celestial body.
  9. 15. Hole - Gravitational collapse, intense gravity.
  10. 16. Planets - Jupiter, Saturn, Uranus, Neptune.
  11. 19. - Planet outside our solar system.
  12. 22. Planet - Pluto, Eris, smaller than planets.
  13. 24. Wind - Flow of charged particles from the sun.