Across
- 4. the natural attraction between physical bodies
- 5. the name of our galaxy
- 8. a group of stars with a definite pattern or arrangement
- 10. a scientist who studies stars and planets
Down
- 1. the distance light travels in one year
- 2. a very small planet
- 3. technical instrument used to see distant objects such as stars
- 6. the red planet
- 7. our natural satellite
- 9. the planet with a rings