Two Micron All-Sky Survey (2MASS) imagery was used to create a animation of the warp of the Milky Way galaxy. Credit: 2MASS, Adrian Price-Whelan ...

So how well do you know the Milky Way? Let's test your knowledge of our galaxy's size, age, speed and more with the 15 questions below. Remember to log in to put your name on the leaderboard and ...

the Andromeda Galaxy will collide with the Milky Way, resulting in a spectacular cosmic collision! Don’t worry, though – the distances between stars are vast, so we won’t feel a thing.

The Andromeda galaxy helped Edwin Hubble settle a great debate in astronomy. Stocktrek Images via Getty Images ...

The Bullseye galaxy is two and a half times the size of our Milky Way and has nine rings. Fifty million years ago, two galaxies met up in space. One was tiny, the other large. The small galaxy ...

By that metric, the ESA's Gaia mission is a resounding success. The spacecraft gave us a precise, 3D map of our Milky Way galaxy and has forced us to abandon old ideas and replace them with compelling ...

In early 1920s astronomy, most researchers believed our Milky Way was the entire universe. They assumed those faint spiral patches in the sky were just cloudy formations within our own galaxy. Little ...

But only one galaxy stands out as the most important nearby stellar island to our Milky Way -- the magnificent Andromeda galaxy (Messier 31). It can be seen with the naked eye on a very clear ...

"It's easy to romanticize Hubble and his discovery of the universe beyond the Milky Way galaxy, but his work really stood on the shoulders of a number of people," said Jeff Rich, an astronomer at ...

But only one galaxy stands out as the most important nearby stellar island to our Milky Way—the magnificent Andromeda galaxy (Messier 31). It can be seen with the naked eye on a very clear ...