Across
- 2. The red planet
- 4. an artificial object that is place into orbit to collect information
- 5. a celestial body that orbits a star
- 7. the study of space
- 9. used to be considered a planet but is now called a dwarf planet
- 11. distance that light travels in one year
- 13. the largest planet in our solar system
- 14. last planet in our solar system
Down
- 1. force that attracts matter
- 3. a group of stars that form a recognizable pattern
- 4. system, collection of planets and moons orbiting around a star
- 6. the planet we live on
- 8. circular motion that planets follow around the sun
- 10. a nonmoving, bright point in the night sky
- 12. the closest planet to the sun