Particular stars called Cepheid variables allow astronomers to determine distance, and Hubble spotted one of these within M31 ...

These things take millions of years to go from one stellar neighborhood to another, so this thing has likely been traveling ...

NASA's Chandra X-ray Observatory provides a new look at the Andromeda galaxy in this multi-wavelength image that includes ...

A look ahead to the MLB game between REDS and RED SOX. Your source for scores, previews, recaps, box scores, and more from every Major League Baseball. The schedule is set, and we're ready for some ...

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 ...

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

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

Early Spiral Galaxy Captured for the First Time Using Gravitational Lenses . For the first time ever, scientists have ...

Witness the breathtaking beauty of our home galaxy, the Milky Way, through 6 stunning images captured by NASA's Hubble Space ...

Highlighting 10 major astronomical milestones of the past century in celebration of the Royal Greenwich Observatory’s 350th anniversary Founded in 1675 by King Charles II, the Royal Observatory ...

Learn about the new research that changes the estimates of the Milky Way’s demise.