Astronomers have taken an unprecedentedly detailed look at the tendrils and filaments that wrap around supermassive black hole-dominated galaxies of Abell 2255.
A galactic collision 11 billion light-years away reveals how an actively feeding supermassive black hole disrupts star formation in a nearby galaxy.
A combination of X-ray from NASA's Chandra observatory and radio data indicates that a galactic "fracture" was likely caused by a special neutron star called a pulsar.
Galaxy cluster Abell 1489, as imaged by the International Gemini Observatory, contains more than 200 of the gravitationally-bound systems of stars, stellar remnants, interstellar gas and dust.
The Andromeda galaxy's family of satellite galaxies point towards the Milky Way, and nobody knows why.
A fog of long-wavelength infrared light could be produced by dusty, star-forming galaxies that have remained hidden — until now, that is.
A spiral galaxy known as NGC 4945 exhibits powerful winds of material blowing from the supermassive black hole located at its core in a new photo taken by the Very Large Telescope in Chile.
For over a century, astronomers have marveled at the beauty and complexity of spiral galaxies, which feature arms covered in a multitude of small-scale features known as feathers.
A family portrait of the Andromeda galaxy and its orbiting dwarf satellites raises questions about how galaxies evolve.
Images from the Very Large Telescope suggest that a galaxy called NGC 3640 has a history of absorbing smaller galaxies.
