The Andromeda galaxy is surrounded by a constellation of dwarf galaxies that are arranged in a highly lopsided manner.

An analysis of star movements from the Gaia spacecraft reveals that the Small Magellanic Cloud — a satellite galaxy bound to ...

A Michigan State University researcher saw X-rays coming from a black hole using the NASA Chandra X-Ray Observatory telescope ...

An extreme protocluster gathering of infant galaxies is hiding a vast cosmic fuel tank that is powering 400 million years of ...

The smallest, dimmest galaxy orbiting Andromeda to date. Image: CFHT/MegaCam/PAndAS (Principal investigator: Alan McConnachie; Image processing: Marcos Arias A group of astronomers has discovered ...

Andromeda XXXV contains an estimated 20,000 Suns worth of stars and lies about half a million light-years from the center of ...

Get ready to be amazed by the breathtaking beauty of spiral galaxies! NASA has shared stunning images of these cosmic wonders ...

Astronomers at the University of Michigan have discovered a new satellite of the Andromeda Galaxy (M31), the Milky Way’s closest major galactic neighbor, and it has broken the record for the ...

A bright star within our Milky Way galaxy photobombed a beautiful new image of a distant galaxy with "patchy" spiral arms.

The cluster, full of more than 2,500 newborn stars that blaze blue in the Hubble image, is in a galaxy with far fewer heavy ...

Astronomers have discovered Andromeda XXXV, the smallest and faintest known galaxy, located 3 million light-years away. It challenges existing models of galaxy formation, as similar small galaxies ...