Solar System

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Across
  1. 2. It is the hottest planet
  2. 5. Smallest planet
  3. 6. It is a star
  4. 7. Biggest planet
Down
  1. 1. Four times wider than Earth
  2. 3. Our “space neighborhood”
  3. 4. The inner core is a hot, dense ball of (mostly) iron
  4. 5. It’s axis of rotation is tilted just 2 degrees