Clusters of stars set the interstellar medium ablaze in the Andromeda galaxy about 2.5 million light-years away. Also known as M31, Andromeda is the Milky Way's closest major galaxy. It measures ...

A large fraction of M31's dwarf satellites are confined to a plane around the Andromeda Galaxy, as confirmed earlier in 2025 by the Hubble Space Telescope, and a similar satellite plane exists ...

Astronomers have long thought that the Milky Way is headed for an inevitable crash with its neighbor, Andromeda. But a new study complicates the story.

Witness the breathtaking beauty of our home galaxy, the Milky Way, through 6 stunning images captured by NASA's Hubble Space ...

For Hubble's pinpoint view, that's a lot of celestial real estate to cover. This stunning, colorful mosaic captures the glow of 200 million stars. That's still a fraction of Andromeda's population.

Under the right conditions, you can even see Andromeda (also known as M31) with the naked eye. In addition, it may be home to upward of 1 trillion stars, many of which are close to the telescope's ...

Also known as M31, Andromeda is the Milky Way’s closest major galaxy, measuring roughly 152,000 light years across, with almost the same mass as our home galaxy. The younger James Webb Space ...

Before then, the orthodox cosmological view was that the Milky Way encompassed the entire known universe, and that Andromeda had to be part of it as a result. Hubble's estimate that M31 was 2.5 ...

Both the Milky Way and the Andromeda galaxies (M31) are part of what's known as the Local Group (LG), which also hosts other ...

Clusters of stars set the interstellar medium ablaze in the Andromeda galaxy about 2.5 million light-years away. Also known as M31, Andromeda is the Milky Way's closest major galaxy. It measures ...

Together, PHAT and PHAST required more than 1,000 Hubble orbits to produce the 2.5-billion-pixel image of M31. This new data could help astronomers understand why Andromeda and the Milky Way could ...