Across
- 2. the system of stars
- 4. an imaginary line about which the earth rotates on
- 6. a cloud of gas and cosmic dust in outer space
- 8. the things that orbit the sun
- 10. a spacecraft that travels through space to collect science information
- 11. all existing matter and space considered as a whole
Down
- 1. a group of stars that form a shape
- 3. the distance that light travels in a year
- 5. the only star in the solar system
- 7. a rocky object that orbits the sun
- 9. a star rock consisting of dust and ice