Here’s how it works. Astronomers have discovered something surprising about the universe's smallest and faintest class of galaxies: Ultra-Diffuse Galaxies (UDGs). A research team studying these ...

For instance, Weisz says it's odd that half of the mini galaxies around Andromeda seem to follow the same plane, orbiting in the same direction. "That's weird. It was actually a total surprise to ...

"It was actually a total surprise to find the satellites in that configuration and we still don’t fully understand why they appear that way." ...

A Swarm of Dwarf Galaxies Buzz Around Our Milky Way's Twin Imagine the Milky Way and Andromeda as two massive aircraft ...

For instance, Weisz says it's odd that half of the mini galaxies around Andromeda seem to follow the same plane, orbiting in the same direction. "That's weird. It was actually a total surprise to find ...