Star Formation Star Evolution White Dwarf Stars Star Characteristics Chemical Composition Star Systems Ancient Stars Star Observation Neutron Stars Stellar Evolution Red Supergiants Binary Star Systems White Dwarfs Planetary Systems Observations Ultraviolet Radiation Research Paper Population III Stars Red Supergiant Stars Star Types Star Behavior Cepheid Variables Observational Astronomy Radio Astronomy Black Holes Variable Stars Oldest Stars Pop III Star Detection Galactic Halo Star Composition Star Age Star Lifecycle Low-Mass Stars Exoplanets Hypervelocity Stars Stellar Phenomena Pulsars