New evidence suggests that a dwarf galaxy orbiting the Milky Way called Ursa Major III is actually a star cluster.

Warm summer nights in August offer a front-row seat to some of the most mesmerizing star clusters in the sky. According ...

Star clusters are stellar groups held together by gravity, which are born together in cosmic nurseries. Open clusters, such as the Hyades and Pleiades, are youngish and look like loose groups ...

Viewing with the aid of 10x50 binoculars will bring the light cast by a stellar cluster into sharper focus, or even allow you ...

Discover 8 photos from NASA showing spiral galaxies and bright star clusters, captured with amazing detail in deep space., ...

August 2025 presents a celestial spectacle, inviting stargazers to explore the night sky. This month offers optimal viewing ...

Ursa Major III, the faintest object in our galaxy, orbits the Milky Way at a distance of more than 30,000 light years. Until ...

In August, astronomers can observe three prominent star clusters: Hercules, Pleiades, and Hyades. These clusters, comprising ...

Ursa Major III/Unions 1 (UMa3/U1), the faintest known satellite of our galaxy, orbits the Milky Way at a distance of more ...

Star clusters are groups of stars that formed together and remain bound by their mutual gravity. They mainly come in two ...

By analyzing the data from NASA's Chandra spacecraft, astronomers have conducted the first X-ray study of a globular cluster ...

New JWST observations of the Phoenix Cluster of galaxies support a theory about star formation that other clusters challenge.