Galaxies

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.

Newly discovered Quipu, a superstructure in which galaxies group together in clusters and clusters of clusters, is the largest known structure in the universe in terms of length, scientists claim.

Astronomers have captured a breathtaking new image of the Antlia Cluster of galaxies.

A rare group of aligned, star-birthing dwarf galaxies resemble a cosmic string of pearls.