Milky Way Galaxy Formation Spiral Galaxies Dwarf Galaxies Star Formation Galaxy Clusters Supermassive Black Holes Galaxy Mergers Galaxy Evolution Distant Galaxies Black Holes Early Universe Formation Elliptical Galaxies Milky Way Galaxy Galactic Evolution Satellite Galaxies Quasars Andromeda Galaxy Interactions Large Magellanic Cloud Small Magellanic Cloud Galaxy Collisions Gravitational Lensing Starburst Galaxies Irregular Galaxies Dark Matter Massive Galaxies Evolution Interacting Galaxies Galactic Mergers Galaxy Interactions Observations Early Galaxies Globular Clusters Galactic Collisions Star Clusters Ancient Galaxies Active Galactic Nuclei Magellanic Clouds Local Group Galaxy Groups Galactic Interactions Barred Spiral Galaxies Nearby Galaxies Star formation Star-Forming Regions GN-z11 Supernovae Seyfert Galaxies Spiral Galaxy Merging Galaxies Cosmic Evolution Galaxy Classification Lenticular Galaxies Formation of Galaxies Galactic Dynamics Circumgalactic Medium Dead Galaxies Extragalactic Astronomy Formation Theories Stars Galaxy Structure Distance Measurement Population III Stars Extragalactic Research Arp 295 Galaxy Dynamics Cosmic Collisions NGC 4753 Galaxy Cores Stellar Populations Fast Radio Bursts Starburst galaxies Galaxy Types James Webb Space Telescope Galactic Cores Outflowing galactic winds Research Irregular Dwarf Galaxies Background Galaxies Perseus Cluster Redshift Host Galaxies Hubble Space Telescope Centaurus A Galaxy Characteristics Host Galaxy Sombrero Galaxy UGC 8091 Merging Cosmology Galaxy Mapping Coma Cluster Colliding Galaxies M87 Galaxy Active Galaxies Pablo's Galaxy Core Activity NGC 5128