Across
- 2. Most of these are actually solar systems.
- 5. This galaxy zone is perfect for life.
- 8. These often strike the outer part of galaxies.
- 9. These can be hard to detect.
- 10. A galaxy revolves around this.
- 12. A space cloud that forms star clusters.
- 13. This will eventually make a solar system.
Down
- 1. This galaxy zone is not suitable for life.
- 3. Galaxies consists of these.
- 4. The universe consists of ______ of galaxies.
- 6. A group of stars that humans see as a pattern.
- 7. Everything we see in our galaxy is in this arm.
- 11. Most of this is found in galaxies.