Though tiny, this newfound satellite galaxy around M31 offers big lessons — and questions — about how galaxies evolve.

A Swarm of Dwarf Galaxies Buzz Around Our Milky Way's Twin Imagine the Milky Way and Andromeda as two massive aircraft ...

The findings reveal unusual chemical signatures and offer new insights into the behavior of novas beyond the Milky Way.

This is a wide-angle view of the distribution of known satellite galaxies orbiting the large Andromeda galaxy (M31), located 2.5 ... galactic "ecosystem" that NASA's Hubble Space Telescope is ...

NASA’s James Webb Space Telescope captured the stunning image of Cartwheel Galaxy. This landscape of “mountains” and “valleys” speckled with glittering stars is actually the edge of a nearby, young, ...

"It was actually a total surprise to find the satellites in that configuration and we still don’t fully understand why they ...

Chinese astronomers have compiled the most comprehensive catalogue to date of the Andromeda Galaxy, known as Messier 31 (M31), utilizing ... ‘Hunt for water’: NASA’s Perseverance tries ...

Located 2.5 million light-years away, the majestic Andromeda ... galaxy, like bees around a hive. These satellite galaxies represent a rambunctious galactic "ecosystem" that NASA's Hubble Space ...

Located 2.5 million light-years away, the majestic Andromeda ... galaxy, like bees around a hive. These satellite galaxies represent a rambunctious galactic "ecosystem" that NASA's Hubble Space ...