That’s almost half the distance to Andromeda. This illustration shows the Milky Way galaxy's inner and outer halos. A halo is a spherical cloud of ... [+] stars surrounding a galaxy. Astronomers ...

Despite the huge amount of data, though, the map doesn't cover the entire Milky Way galaxy. The Milky Way is estimated to have anywhere from 100 billion to 400 billion stars and likely as many ...

ESA’s decade-long Milky Way Gaia mapping mission still has tons of data to release over the next few years. Expect surprises.

In their study published Thursday in the journal Science, they showed that by measuring the distance between classical Cepheid variable stars within the galaxy, they could develop a three-dimensional ...

Recent studies challenge the long-held belief that the Milky Way is a standard model for understanding galaxy formation, ...

By studying hot gas glowing in circumgalactic space, astrophysicists have found evidence of enormous magnetic fields that ...

Astronomers have discovered an extraordinary new giant radio galaxy with plasma jets 32 times the size of our Milky Way.

Astronomers have unveiled surprising new details about a small galaxy, NGC 300, challenging existing theories on galaxy ...

The result is an unprecedented large-scale 3D map of the galaxy. And that map shows that the edges of the Milky way bend slightly, giving it a warped S shape. "Our map shows the Milky Way disk is ...

This study opens important questions in cosmology, particularly on the amount of dark matter contained in our galaxy. The total mass of the Milky Way is estimated ... in a halo surrounding the ...