White Dwarfs Supernovae Massive Stars Star Formation Star Clusters Red Supergiants Population III Stars Red Giants Mass Loss Aging Stars Red Giant Phase White Dwarf Formation Neutron Stars Star Age Substellar Objects Dying Stars Gas and Dust Ejection Star Lifecycle Chemical Elements Chemical Composition Star Types Triple Star Systems Compact Stars White Dwarf Stars Binary Stars Supernova Mechanisms Protostars Sun-like Stars Convection Processes Red Giant Stars