Galaxies

A relic galaxy has been uncovered from the early universe, revealing new clues about what our own Milky Way galaxy may have looked like back then.

Astronomers have discovered that large flows of cold gas created by collisions between galaxies in the early universe may have forged some of the most monstrous star systems.

Astronomers have discovered a group of dwarf galaxies with distinct features that challenge predictions made by the prevailing cold dark matter (CDM) model.

Five new portraits of galaxies located between 4 million to 30 million light-years from Earth could help astronomers unlock the secrets of cosmic evolution.

The Hubble Space Telescope has captured two tangled galaxies, whose interactions have caused knots to form in the constellation Coma Berenice, or the "queen's hair."

A 3D map of our cosmic neighborhood has revealed hot and cold regions as well as an "escape tunnel" from our local bubble.

A celestial light show illuminates a distant spiral galaxy, where a hidden supernova briefly outshines its stellar neighbors in a new image from the Hubble Space Telescope.

A new image from the Hubble Space Telescope captures the galaxy IC 3225 with a comet-like tail of gas streaming from its central disk as it moves through the Virgo Cluster.

Deep in the heart of the massive Perseus cluster, giant galaxies stir, stars are torn from their homes and hot gas radiates at more than 1 million degrees Celsius.

The Milky Way's system of small, orbiting satellite galaxies is quite unusual, a new 12-year study of other galaxies in the local universe has found.