The Latest Breaking News from Andromeda

A hundred years ago, astronomer Edwin Hubble dramatically expanded the size of the known universe. At a meeting of the American Astronomical Society in January 1925, a paper read by one of his colleagues on his behalf reported that the Andromeda nebula, also called M31, was nearly a million light…

The most detailed panorama of the entire Andromeda galaxy is packed with science that could revolutionize our understanding of how spiral galaxies across the universe form and evolve.

The reddish structures of our neighboring galaxy glow brightly in a new image from the Hubble Space Telescope.

The Hubble Space Telescope has imaged one of Andromeda's dwarf galaxies. It's named Pegasus.

The Andromeda galaxy is the Milky Way's closest neighbor, and the most distant object that can be seen with the naked eye

A new simulation suggests the possible head-on collision of our Milky Way galaxy with the neighboring Andromeda galaxy comes down to a coin flip.

Astronomers have long predicted that a collision between our galaxy and nearby Andromeda could be inevitable, but new calculations suggest this may be an over exaggeration.

Astronomers, maybe more than anyone, appreciate what an island of perfection our Earth is. Our orbit may put us at a perfect distance from the sun for life to flourish, but it is too small to easily help astronomers determine how big the universe is.

Do galaxies, including our own Milky Way, orbit anything in the universe?