For nearly a century, astronomers have known that the universe is expanding. Most galaxies are carried outward with the flow ...

New research suggests that the heart of the Milky Way may be dominated by a dense clump of dark matter rather than the ...

For years, astronomers have observed the strange motion of Andromeda, the Milky Way’s closest large galactic neighbor. While ...

The mystery of galaxies in the early Universe just got even weirder. A team of astronomers has identified a giant spiral galaxy so well-formed that it already has a stable galactic bar; a long, ...

New supercomputer simulations suggest the Milky Way could be surrounded by dozens more faint, undetected satellite galaxies—up to 100 more than we currently know. These elusive "orphan" galaxies have ...

Scientists have built detailed Milky Way simulations under strange new physical laws to probe dark matter, revealing how different versions of the universe might behave and helping us get closer to ...

Researchers may have identified what could be a compelling clue in the ongoing hunt to prove the existence of dark matter. A mysterious diffuse glow of gamma rays near the center of the Milky Way has ...

WASHINGTON, May 23 (Reuters) - Astronomers have observed a galaxy dating to an earlier epoch in the universe's history that surprisingly is shaped much like our Milky Way - a spiral structure with a ...

WASHINGTON, June 2 (Reuters) - (Fixes distance in paragraph 6, 2.5 million light-years instead of 2.5 billion) The Milky Way and the neighboring Andromeda galaxy are currently hurtling through space ...