The third known visitor from another star system, 3I/ATLAS, has already delivered on one of the biggest promises in modern astronomy: a chance to treat an interstellar object as a potential alien ...

Webb reveals a bridge of stars linking two nearby dwarf galaxies, offering a look at how gravity reshapes galaxies and sparks ...

Globular clusters are often described as ancient, tightly bound fossils of the early Milky Way. It has been believed that ...

Earth is about to see three total solar eclipses in just under two years, with each successive path of totality moving west ...

Astronomers report that the Champagne Cluster is actually two galaxy clusters in the process of merging, based on X-ray, optical, and spectroscopic observations published in 2025 ...