Earth and space

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Across
  1. 3. This is what keeps the solar System together
  2. 4. this is what we live on
  3. 5. this is called the rust planet
  4. 6. this is called the smallest planet in our solar System
  5. 8. our planet is part of this
Down
  1. 1. this is the most famous dwarf planet
  2. 2. this is also called earths twin
  3. 3. this is what surrounds everything
  4. 4. this is where animals live
  5. 7. this revolves around the earth