Space and Earth Crossword

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Across
  1. 4. _______ were not around for 90% of Earth's history.(5)
  2. 6. There are 79 known moons orbiting _______.(7)
  3. 7. A year on Venus is _______ than a day on Earth.(7)
  4. 9. Earth ______ at 1000 miles an hour.(7)
  5. 10. One _____ Earth's fit in the Sun.(7)
  6. 11. ______ on Mars are Blue.(7)
Down
  1. 1. What's the rarest thing in space? Ring _______.(8)
  2. 2. There are more trees on Earth than _____ in the Milky Way.(5)
  3. 3. _______ is the only planet not named after a God.(5)
  4. 5. Every ______ is different.(9)
  5. 8. Earth isn't perfectly ______.(9)
  6. 12. ______ has 83 moons.(6)