Georgia's awsome crossword

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Across
  1. 2. what is our galaxy called?
  2. 4. which planet is known as earth’s twin?
  3. 5. which planet has the most largest rings around it?
  4. 6. Who discovered that the earth wasn’t the centre of the universe?
  5. 9. which planet has the most violent weather in the solar system?
  6. 12. what did Galileo Galilee invent?
  7. 14. which planet is known as the red planet?
Down
  1. 1. who discoverd gravity?
  2. 3. a row of rocks floating past Mars
  3. 6. who was the first person on the moon?
  4. 7. whats the smallest planet?
  5. 8. whats the biggest planet?
  6. 10. which planet has rings but are very faint?
  7. 11. what planet is hotter than boiling water?
  8. 13. what planet do we live on?