The new composite image, which combines hundreds of photos from the Hubble Space Telescope, shows the Andromeda Galaxy with more than 200 million individually resolved stars.

What will happen to the solar system when the Milky Way completes the merger with the Andromeda Galaxy? Bryan ...

Astronomers spent a decade compiling this special image with the Hubble Space Telescope and then stitched together 600 photos to showcase over 200 million stars.

Centaurus A: NGC 5128 is a galaxy in constellation Centaurus, discovered in 1826 by Scottish astronomer James Dunlop. Messier ...

In 1920, astronomers Harlow Shapley and Heber Curtis held a Great Debate. Shapley argued that the spiral nebulae were small and in the Milky Way, while Curtis took a more radical position that they ...

This image of the Andromeda Galaxy, captured by the Herschel Space Observatory, reveals a detailed view of cool lanes of star formation.

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.

But only one galaxy stands out as the most important nearby stellar island to our Milky Way — the Andromeda Galaxy. It can be seen with the naked eye on clear autumn nights as a faint oval ...

"These two supernova remnants are helping us to better understand the dynamics of our home galaxy’s neighborhood," ...

The intrepid mapping mission has collected more than three trillion observations that'll change the way we see our neck of the cosmic woods.