By tracing stars in other galaxies, the Gaia satellite has helped astronomers understand the relative motions of the Milky Way's galactic siblings.
Starbirth and stardeath light up a nearby galaxy while faraway galaxies twist and bend in these new images from NASA's Hubble and Chandra space observatories.
A new study says our neighbor galaxy’s big stellar halo and stellar evolution are due to a major collision that ended 2 billion years ago.
The Magellanic Clouds — two nearby dwarf galaxies easily visible to the naked eye in the southern hemisphere — are key to understanding the dynamics and evolution of the Local Group of galaxies. Can an in-depth look at these galaxies’ outer regions help us make sense of their complicated interaction history?
At least 14 galaxies are swarming in the early universe, forming a protocluster with the mass of 10 trillion Suns. It might become one of the most massive structures in the universe.
You may have seen recent news about NGC 1052–DF2, a galaxy that was discovered to have little or no dark matter. Now, a new study explores what NGC 1052–DF2 does have: an enigmatic population of unusually large and luminous globular clusters.
Most of the dwarf galaxies around Centaurus A appear to be orbiting the giant galaxy along a single plane — a result not predicted by current cosmological models.