Our universe is full of mysteries, but few are as perplexing as the dark, tiny galaxies that hover around larger ones like ...

The James Webb Space Telescope’s Near-Infrared Camera captured an "array of stars that make up the dwarf galaxy Wolf–Lundmark ...

By analyzing the data from the Pan-Andromeda Archaeological Survey (PandAS), European astronomers have discovered a new satellite of the Andromeda galaxy. The newfound object, which received the ...

Astronomers report the discovery of a brand-new ultra-faint dwarf galaxy around Andromeda, the closest large galaxy to our ...

Astronomers know that mergers play a huge role in galaxy growth. Right now, the Milky Way is slowly consuming the Large and Small Magellanic Clouds. The evidence is a stream of gas called the ...

A new study suggests that failing to detect dark matter signals in some galaxies may not contradict evidence seen in our own.

A dark matter signal that appears in one place but not another might look like a contradiction. This new study argues it may ...

In an ancient dwarf galaxy on the outskirts of the Milky Way, astronomers have discovered one of the most chemically primitive stars ever seen. Named PicII-503, the star’s extreme lack of heavy ...

The constellation of Ursa Major (The Great Bear) is home to Messier 101, the Pinwheel Galaxy. Messier 101 is one of the biggest and brightest spiral galaxies in the night sky. Like the Milky Way, ...

Dark matter is one of the most important and most mysterious questions in modern astronomy. Although dark matter cannot be seen or touched, it profoundly influences the formation and evolution of ...

Learn how a two-state model of dark matter could explain why gamma-ray signals appear in some galaxies but not others.

A mysterious glow of gamma rays at the center of the Milky Way has long hinted at dark matter, but the lack of similar ...