cosmos

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Across
  1. 2. The fourth planet from the Sun, often called the "Red Planet." (4 letters)
  2. 4. A small icy body that orbits the Sun and develops a tail when near it.
  3. 6. The second planet from the Sun, known for its brightness.
  4. 8. A large system of stars, gas, and dust held together by gravity. (6 letters)
  5. 10. An artificial object placed in orbit around a planet or moon. (8 letters)
  6. 11. The closest planet to the Sun.
Down
  1. 1. The path an object takes around a star or planet.
  2. 3. A natural object that orbits a planet.
  3. 5. A celestial body that orbits a star and is large enough to be rounded by its gravity. (6 letters)
  4. 7. The sixth planet from the Sun, known for its rings.
  5. 9. A hypothetical or fictional being from another world. (5 letters)
  6. 11. The galaxy that contains our Solar System.