Unusually fast-moving gas clouds near a nearby galaxy suggest they may have come from outside the galaxy. Scientists have ...

Researchers discover high-velocity clouds in the nearby spiral galaxy M83. These clouds are moving at speeds significantly ...

In a groundbreaking study published in The Astrophysical Journal, astronomers have discovered high-velocity gas clouds near ...

The odds of a galactic collision in our distant future are much lower than we thought, according to new simulations.

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 its largest neighbor, the Andromeda galaxy, predicted to occur in about 4.5 billion years, has been anticipated by astronomers since 1912. But new ...

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.

The probability of the Milky Way colliding with the Andromeda galaxy within the next 10 billion years is now estimated at 50%, lower and farther in the future than previous predictions.

The knowledge that Andromeda is moving toward the Milky Way is core to our understanding of an expanding universe. Having four years previously figured out that Andromeda — a fuzzy blob to the ...

What does the Milky Way look like?. Sometimes, the billions of stars comprising our home galaxy appear especially vibrant during “Milky Way season” as the band arcs across the night sky. The ...

The Milky Way sits in a cosmic neighborhood called the Local Group that includes more than 50 other galaxies. Those galaxies can be as small as a dwarf galaxy with up to only a few billion stars ...