Created as a tribute to dark matter pioneer Vera Rubin, the image was created with the aid of a vast array of telescopes.

The Andromeda galaxy is also known as Messier 31. It is a spiral galaxy located about 2.5 million light-years from Earth. On ...

A new composite image of the Andromeda Galaxy is offering an unprecedented view of our closest spiral galactic neighbor. Composed by NASA and international space partners, the image combines data from ...

Stargazers may catch a cosmic light show this Fourth of July weekend when the Milky Way appears in the night sky across the ...

“For example, Chandra’s X-rays reveal the high-energy radiation around the supermassive black hole at the center of M31 as ...

At 2.5 million light-years from Earth, the Andromeda Galaxy is the Milky Way's nearest major galaxy.. The large spiral galaxy measures 152,000 light-years from end to end and is believed to be ...

Alternative to fireworks? Stargazers could instead catch a cosmic light show this Fourth of July weekend when the Milky Way ...

Those galaxies can be as "small" as a dwarf galaxy with up to only a few billion stars or as large as Andromeda, our nearest large galactic neighbor. Why is it called the Milky Way?