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Across
  1. 5. Most are found between Mars and Jupiter.
  2. 7. A hot, glowing ball of gas.
  3. 8. The 4 closest planets to the sun.
Down
  1. 1. An ice ball that sometimes has a trail.
  2. 2. The hottest planet.
  3. 3. The 4 farthest planets from the sun.
  4. 4. These orbit planets.
  5. 6. The planet we live on.
  6. 7. The only star in our solar system.