PLANET

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Across
  1. 3. Smallest planet in the galaxy.
  2. 5. The farthest known planet in the Solar System.
  3. 6. second-largest in the Solar System, after Jupiter.
Down
  1. 1. It is sometimes called Earth's "sister" or "twin" planet as it is almost as large and has a similar composition.
  2. 2. The seventh planet from the Sun.
  3. 3. Reflects light from the sun.
  4. 4. Biggest planet in the galaxy.