The Phoenix Cluster's central galaxy is about 5.8 billion light-years away and should be mostly done with star formation. Many galaxy clusters have a region of hot gas in the intracluster medium (ICM) ...

James Webb Space Telescope imagery of Pandora’s Cluster (Abell 2744) delivers three galaxy clusters and so much more. Take a tour of the view. Video: STScI, Danielle Kirshenblat Music: PremiumBeat ...

Astronomers using the Hubble Space Telescope (HST) have studied one of the largest young star clusters in our galaxy, ...

How do you cool down a phoenix? I don't mean the mythological birds of flame and rebirth, but rather a cosmic namesake with a fittingly fiery nature.

Cracks in the universe refers to cosmic strings, which are hypothetical topological defects theorized to have formed during ...

In 1920, astronomers Harlow Shapley and Heber Curtis held a Great Debate. Shapley argued that the spiral nebulae were small ...

Isolated, low-mass galaxies help researchers study the impact of reionization on their star formation histories (SFHs) ...

Compared to their more isolated counterparts, the galaxies in galaxy clusters are often distorted by the gravitational pull ...

The heart of a globular cluster, like Terzan 4, is packed with stars so tightly that individual stars are difficult to ...

The VLT captures a stunning infrared view of Sagittarius C, exposing a rich field of young stars. This breakthrough provides ...

Its cosmic corsage tells a story of death and rebirth. Within a few million years — a blink of an eye in the universe’s life — the gas and dust will either become budding young stars and planetary ...