- Active galactic nucleus - Wikipedia.pdf -rw-r--r-- 131 bytes
- Barred spiral galaxy - Wikipedia.pdf -rw-r--r-- 131 bytes
- Dark matter - Wikipedia.pdf -rw-r--r-- 131 bytes
- Dwarf galaxy - Wikipedia.pdf -rw-r--r-- 131 bytes
- Elliptical galaxy - Wikipedia.pdf -rw-r--r-- 131 bytes
- Galaxy - Wikipedia.pdf -rw-r--r-- 132 bytes
- Interstellar medium - Wikipedia.pdf -rw-r--r-- 131 bytes
- Irregular galaxy - Wikipedia.pdf -rw-r--r-- 131 bytes
- Lenticular galaxy - Wikipedia.pdf -rw-r--r-- 131 bytes
- Low-ionization nuclear emission-line region - Wikipedia.pdf -rw-r--r-- 131 bytes
- Luminous infrared galaxy - Wikipedia.pdf -rw-r--r-- 131 bytes
- Milky Way - Wikipedia.pdf -rw-r--r-- 132 bytes
- Peculiar galaxy - Wikipedia.pdf -rw-r--r-- 131 bytes
- Quasar - Wikipedia.pdf -rw-r--r-- 131 bytes
- Ring galaxy - Wikipedia.pdf -rw-r--r-- 131 bytes
- Seyfert galaxy - Wikipedia.pdf -rw-r--r-- 131 bytes
- Spiral galaxy - Wikipedia.pdf -rw-r--r-- 131 bytes
- Starburst galaxy - Wikipedia.pdf -rw-r--r-- 131 bytes
- Ultra diffuse galaxy - Wikipedia.pdf -rw-r--r-- 131 bytes