Across
- 2. Includes the Sun and all the planets orbiting around it
- 4. Ball of hot gas
- 7. Object that explores places too dangerous for humans
- 9. Device that measures the spectrum of light
- 10. What all planets in our solar system orbit around
- 11. A large cluster of stars and dust
- 12. Name of our galaxy
Down
- 1. A group of galaxies
- 3. Name of the galaxy we will eventually collide with
- 5. Everything that has ever existed is in the ________
- 6. What is at the center of our galaxy
- 8. Cloud of dust and gas that forms stars