Other Members of the Solar System

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Across
  1. 7. A name for the four outer, gaseous planets
  2. 9. A celestial body that orbits a star or stellar remnant
  3. 10. Nearest planet to the sun
  4. 11. A natural satellite in orbit around a larger celestial body
  5. 12. 16 down before it enters the Earth's atmosphere
  6. 15. Fifth-largest planet
  7. 19. The name for the four planets closest to the sun
  8. 20. An area of space beyond the orbit of Neptune
  9. 21. A sphere of gas and plasma held together by gravity
Down
  1. 1. known as dirty snowballs
  2. 2. Milky-Way, e.g.
  3. 3. The star at the center of our solar system
  4. 4. Largest moon in our solar system
  5. 5. Planet discovered by William Herschell in 1781
  6. 6. Dwarf planet that used to be classified as a planet
  7. 8. Small celestial body composed of rock and metal
  8. 12. a small, rocky object from space that is heated up as it enters the Earth’s atmosphere.
  9. 13. A cloud of icy planetesimals
  10. 14. Known as the red planet
  11. 16. Second largest planet in our solar system
  12. 17. Largest planet
  13. 18. “Evening Star”