| 28.3 The Distribution of Galaxies in Space Provider: openstax cnx Language: English |
| 29.2 A Model of the Universe Provider: openstax cnx Language: English |
| 25.3 The Mass of the Galaxy Provider: openstax cnx Language: English |
| 26.3 Properties of Galaxies Provider: openstax cnx Language: English |
| Astronomy: OpenStax Provider: ecampusontario open library Language: English |
| 25.1 The Architecture of the Galaxy Provider: openstax cnx Language: English |
| Exploring Black Holes: General Relativity & Astrophysics Provider: mit opencourseware Language: English |
| 28.2 Galaxy Mergers and Active Galactic Nuclei Provider: openstax cnx Language: English |
| 28.5 The Formation and Evolution of Galaxies and Structure in the Universe Provider: openstax cnx Language: English |
| 28.1 Observations of Distant Galaxies Provider: openstax cnx Language: English |