Across
- 5. Galaxies that don't have a defined shape
- 6. This is the group that the Milky Way belongs to
- 8. This type of galaxy emits lots of radio waves
- 11. The sum of the mass is galaxies is always ____ than the luminosity
- 13. Given the classification symbol E
- 14. The center of active galaxies
- 15. Galaxies close together can do this and it changes their shape
Down
- 1. This theory explains why the universe is getting bigger
- 2. Really big group of galaxies
- 3. The mass and luminosity of galaxies can ___ greatly
- 4. At the center of AGNs and quasars
- 7. The invisible glue holding galaxies together
- 9. Given the classification symbol S
- 10. These types of galaxies emit lots of energy from the center
- 12. Stellar-like objects at the center of active galaxies
- 13. Hubble proved the universe is always doing this