Across
- 2. An attractive force between any two objects
- 4. A group of millions or billions of stars
- 5. A large rock that orbits the sun
- 7. An imaginary line that divides the North Pole from the south
- 9. A half of the earth either north or south
- 11. the time it takes a planet around once
- 12. A large natural object that orbits a planet
Down
- 1. The galaxy in which the solar system is located
- 3. An event when one planet blocks another one for the eye
- 6. A representation of an idea, object or system
- 8. A time of year with typical weather patterns
- 10. A ball of gas that releases gas and ligth