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) ...

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

An international team of astronomers has captured the most detailed image ever of a cosmic filament, a vast structure of gas ...

While mapping the nearby universe, astronomers discovered the largest-known structure in the universe, about 425 million to ...

Enormous Galaxy Clusters Found to be 1.3 Billion Light-Years Wide, Deemed to be The Largest Known Structure In a monumental ...

New findings explain the Phoenix cluster's mysterious starburst. Data confirm the cluster is actively cooling and able to generate a huge amount of stellar fuel on its own.

New data reveals a 3-million-light-year filament connecting two galaxies, each of which hosts a supermassive black hole.

Experts emphasize that the cosmic microwave background is shaped by everything it encounters on its journey, including ...

After hundreds of hours of observations, researchers captured a highly detailed image of a long filament of the "cosmic web" ...

Scientists have discovered the largest known structure in the universe, a massive superstructure named Quipu. This enormous cosmic formation weighs an astonishing 200 quadrillion times the mass of the ...

A galaxy in the distance, was tightly encircled by a halo of light—also known as an Einstein Ring, a result of gravitational ...