Across
- 4. a galaxy makes up about one-fourth of the galaxies in the universe
- 5. the season we can see the center of our galaxy
- 7. a galaxy where the stars are very old and red
- 10. a collection of stars and gas
- 11. in the center of our galaxy
Down
- 1. the name for the black hole
- 2. made of 100 to 400 billion stars
- 3. first person to classify galaxies based on their shape
- 6. galaxy that has a bulge of stars in the middle
- 7. a planet found in the spiral galaxy
- 8. holds the galaxy together
- 9. we call this a natural satellite