the universe of rafatih and danitih

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Across
  1. 4. what is the name of the dwarf planet in our solar system?
  2. 5. what protects the earth from ultraviolet rays?
  3. 9. when all started?
  4. 10. what the planet that have a ring?
Down
  1. 1. is the biggest planet in our solar sistem?
  2. 2. junk
  3. 3. what is the name of our universe?
  4. 6. what is the luminous body on the sky?
  5. 7. the sun is consisted by what?
  6. 8. is gravitating on the space?
  7. 10. what is the name of our big star?