The Solar System

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Across
  1. 6. Seasons on this planet last for 20 years
  2. 7. This planet would float if you put it in water
  3. 9. This planet has the biggest ocean
  4. 10. Makes up 99% of the solar system
Down
  1. 1. Hottest planet in the solar system
  2. 2. No longer coinsidered a real planet, but a dwarf planet
  3. 3. Home of the biggest volcanic mountain (Olympus Mons)
  4. 4. First scientist to look at the night sky through a telescope
  5. 5. One day on this planet is equal to 58 Earth days
  6. 8. The brightest star