A new composite image of the Andromeda Galaxy is offering an unprecedented view of our closest spiral galactic neighbor.

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

Astronomers have found a new way of accurately mapping the outer gas disk of the Milky Way using the positions of young stars ...

Highlighting 10 major astronomical milestones of the past century in celebration of the Royal Greenwich Observatory’s 350th ...

Now, this decade-long belief is being challenged by new research that suggests the Milky Way and Andromeda may not be on a collision course after all. The study, published today in Nature ...

Hubble has made more than 1.6 million observations over the course of its lifetime, NASA says. And Hubble's discoveries have spawned more than 21,000 peer-reviewed science papers.

Hubble Space Telescope's 35th anniversary: See NASA's new out-of-this-world images The Hubble Space Telescope, launched 35 years ago, has blown our minds with its striking images of far-away ...