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.

Mysterious object spotted in our galaxy is emitting X-rays and radio waves, astronomers say. May 28, 2025 / 1:14 PM EDT / CBS/AP Explaining signs of life found on distant planet .

Once seen as inevitable within 10 billion years, the odds are now a coin flip — and the sun will expand to engulf Earth billions of years earlier anyway.

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.

A view of the spiral galaxy NGC 3982, as seen by NASA’s Hubble Space Telescope. Galaxies come in many different variations, but astronomers classify them into four main types: spiral, elliptical ...

This galaxy, designated Andromeda XXXV, and its compatriots orbiting our neighbor galaxy, Andromeda, could change how we think about cosmic evolution. That's because dwarf galaxies this small ...