cosmos

2. The fourth planet from the Sun, often called the "Red Planet." (4 letters)
4. A small icy body that orbits the Sun and develops a tail when near it.
6. The second planet from the Sun, known for its brightness.
8. A large system of stars, gas, and dust held together by gravity. (6 letters)
10. An artificial object placed in orbit around a planet or moon. (8 letters)
11. The closest planet to the Sun.

1. The path an object takes around a star or planet.
3. A natural object that orbits a planet.
5. A celestial body that orbits a star and is large enough to be rounded by its gravity. (6 letters)
7. The sixth planet from the Sun, known for its rings.
9. A hypothetical or fictional being from another world. (5 letters)
11. The galaxy that contains our Solar System.