Cosmic dawn galaxies seen by JWST reveal hidden clues about dark matter and keep rival theories about its true nature alive.

Approximately 424 million light-years away, a vast chunk of the cosmic web (the network-like distribution of matter the ...

The X‑arithmetic technique offers a powerful new way to map the physics of other galactic structures across the universe and ...

The Hubble Space Telescope has turned its sharp eye toward a ghostly swirl of stars and gas known as the "Lost Galaxy," given ...

Astronomers recently discovered a never-before-seen celestial phenomenon hiding in our own cosmic backyard. The mystery object, located just a short 15,000 light-years from Earth in our Milky Way ...

Indian astronomers have identified a surprisingly mature, Milky Way-like galaxy from the universe’s early era. Named ...

A spiral galaxy, shaped much like our Milky Way, has been found in an era when astronomers believed such well-formed galaxies ...

Looking for a sky event this week? Check out our full Sky This Week column. December 11: Visit the Orion Nebula The Geminids ...

We often think of galaxies either as individual “island universes” or as a member of a galaxy cluster. But there is another category of association: galaxy groups. Many galaxies — perhaps most in the ...

The galaxy's discovery challenges our understanding of how galaxies were formed in the early period after the Big Bang.

Spring has sprung — and for lovers of deep-sky objects, that means it’s galaxy season. This is a time of the year when that pesky, band of glowing stars and shadowy dust that we call the Milky Way is ...