Novae Stellar Evolution Supernovae Supernova Black Holes Nova Star Formation Nova Events Binary Star System Variable Stars White Dwarfs Binary Systems Star Characteristics Binary Stars Star Disappearance Supergiants Novas Explosions White Dwarf Stars Planetary Ingestion Binary Star Systems Recurrent Nova Planetary Systems Red Giant Stars Star Observations Accretion Disks Superflares Red Supergiants Solar Activity Blue Stragglers Fast-moving Stars Light Variations Flares Ultraviolet Radiation Neutron Stars Nova Outburst White Dwarf Star Red Giant Star Nova Eruption Nova Explosions Twin Stars Planetary Consumption Stellar Radio Emissions