Our neighboring Andromeda Galaxy (Messier 31, or M31) appears to sport a lopsided arrangement of satellite galaxies that defy scientific models, stumping astronomers who are also trying to figure ...

A collision between our Milky Way galaxy and its largest neighbor, the Andromeda galaxy, predicted to occur in about 4.5 billion years, has been anticipated by astronomers since 1912. But new ...

When school textbooks explain the Milky Way’s far-future, they often end with a drama: our spiral home colliding head-on with the equally grand Andromeda galaxy roughly five billion years from now.

But one backyard astrophotographer has shattered that notion with a stunning photo of the Andromeda Galaxy, ... Our brains are glowing, and scientists want to figure out why. Science. Joshua Hawkins.

There’s now a 50-50 chance this galaxy will crash into ours. Astronomers have long thought that the Milky Way is headed for an inevitable crash with its neighbor, Andromeda.

In roughly 4 billion years, our home Milky Way galaxy may collide with the neighboring Andromeda galaxy. We are approaching Andromeda at roughly 250,000 miles per hour, and scientists have ...

Astronomers have long thought the Milky Way was destined to merge with the nearby Andromeda galaxy. The aftermath of this predicted clash has been dubbed “Milkomeda,” and researchers predicted ...

Andromeda XXXV is only about 20,000 times more massive than our Sun—very small, even for a satellite galaxy. For comparison, the Milky Way’s mass is about 1.5 trillion solar masses, and the ...

A collision between the Milky Way and neighboring galaxy Andromeda is far from a sure thing; in fact, it could hinge on the flip of a cosmic coin.

A collision between our Milky Way galaxy and the neighboring Andromeda galaxy, long considered inevitable, may be in question, astronomers say.