An international team of astronomers reports the discovery of a new compact galaxy group using the Atacama Large Millimeter/submillimeter Array (ALMA). The new group, designated CGG-z4, hosts two ...

Yale astronomers have announced the discovery of a galaxy with nine concentric rings—the most rings ever seen in a single ...

Scientists are keen to get to the bottom of the dark matter puzzle because this phenomenon accounts for the vast majority of the "stuff" in the universe — about 85%, in fact. That means everything we ...

it became clear that the Milky Way was only one star system (or galaxy) among myriad others. This was the birth of our modern universe of galaxies, so poetically celebrated in Seeing in the Dark.

Dark stars can be incredibly huge, stretching for thousands of light-years, while still having relatively low density. This would match observations of galaxy cores, which makes this an intriguing ...

NASA's James Webb Space Telescope has captured a unique image that revealed 44 individual stars in a galaxy 6.5 billion light-years away from the Milky Way.

But this hypothesis struggles to explain the relatively low densities of galaxy ... the fuzzy dark matter in the center, creating what the researchers named a fermion-boson star, in reference ...