Across
- 3. The planets, stars, and moons around Earth is called the Solar _______.
- 5. The planet we live on.
- 6. Giant balls of gas that give off light.
- 8. The study of space.
Down
- 1. Large spheres in space that go around a star.
- 2. Things in space that orbit planets.
- 4. How scientists study and learn.
- 7. The path planets take in space.