Universe Crossward

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Across
  1. 1. Our home
  2. 5. A branch of science about space.
  3. 6. The smaller 1 of mars 2 moons
  4. 9. 1 of the 2 other kingdoms
  5. 11. The bigger 1 of mars 2 moons
  6. 12. How old are the oldest stars?
  7. 15. How fast light travels?
  8. 16. The kingdom of plants.
  9. 18. Matter with negative mass.
  10. 19. The highest taxonomic rank.
  11. 20. Matter with negative particles.
Down
  1. 2. The kingdom of animals.
  2. 3. 1 of the 2 other kingdoms
  3. 4. Everything.
  4. 7. The kingdom of bacteria
  5. 8. The other main kingdom
  6. 10. The red planet
  7. 13. The kingdom of fungus.
  8. 14. something that has physical form.
  9. 17. 9.5 billion km.