Planetary Crosswords

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Across
  1. 1. What is the coldest planet in the solar system
  2. 3. Which planet is known as the dwarf planet
  3. 5. Who discovered Jupiter's four moons?
  4. 7. Who was the first person to walk on the moon
  5. 9. What's the biggest planet in the solar system?
  6. 10. for this planet one day is longer than a year
Down
  1. 2. This planet was named after the Roman god of the sea
  2. 4. Which planet is the sister planet of the earth?
  3. 6. How many rings are around Saturn
  4. 8. Which planet has the weakest gravitational pull