Astronomers have discovered a flattened structure of matter around the Milky Way that explains the unusual motion of nearby galaxies.

Add Yahoo as a preferred source to see more of our stories on Google. The positions and trajectories of 20 hypervelocity stars as reconstructed from data acquired by the Gaia satellite, overlaid on ...

For decades, astronomers wondered why most nearby galaxies are speeding away from the Milky Way instead of being pulled in by its gravity. New simulations reveal the answer: our galaxy sits in a ...

Scientists have uncovered evidence that our Sun may have traveled across the Milky Way as part of a massive migration of ...

The ratio of a star’s age to its metal content ties it to a characteristic birthplace within the disk.

Amid the vast darkness of the Milky Way’s halo, a faint, enigmatic trail of stars has been spotted, one that could rewrite our understanding of the galaxy’s formation. C-19, a newly discovered stellar ...

Super galaxy clusters are among the largest structures in the universe. Now, a particularly large one has been measured, ...

A mysterious region near the center of the Milky Way has captured the attention of astronomers. Known as Sagittarius C, this strange place holds thousands of newborn stars, huge clouds of gas, and ...

New research from a team at the Harvard Center for Astrophysics suggests that the Large Magellanic Cloud, a dwarf galaxy neighboring the Milky Way, hosts a gravitational structure hundreds of ...

Now a pair of studies published today in Astronomy and Astrophysics argue that the sun did not make this journey alone. The telltale sign of the sun’s galactic journey is its chemical composition, ...

Astronomers peering into some of the furthest reaches of our universe have made a “baffling” discovery: the most distant rotating disc galaxy ever observed. And it closely — if not eerily — resembles ...

Astronomers have chased hypervelocity stars for more than a century. These rare objects move so fast that the Milky Way cannot keep them. When a star exceeds the galaxy’s escape speed, it becomes ...