CH Section 30.1: The Milky Way GalaxyThe Milky Way Galaxy Section 30.2: Other Galaxies in the UniverseOther Galaxies in the Universe Section 30.3: CosmologyCosmology.
The HERTZSPRUNG RUSSEL DIAGRAM A classification system for stars. It organizes stellar information by making a correlation between a stars luminosity (absolute.
The Photometric Properties of NGC 6134 and Hogg 19 SDSS u’g’r’i’z’ Open Cluster Survey: Credit: Credit: SMARTS consortium.
