Space Explorers

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Across
  1. 1. A large system of stars, like the Milky Way.
  2. 6. Earth's natural satellite.
  3. 7. The path of a planet or moon around another body.
  4. 9. A vehicle used to travel into space.
  5. 10. The planet known for its rings.
Down
  1. 2. A person trained to travel in space.
  2. 3. A small icy body that orbits the Sun, often with a tail.
  3. 4. The second planet from the Sun, often called Earth's twin.
  4. 5. The red planet, fourth from the Sun.
  5. 8. A giant ball of gas that shines in the sky at night.