Astronomers have explained how a galaxy cluster maintains its heat, despite emitting X-rays that cool the hot gas at its center. The group discovered the existence of a fast-moving, high ...

Researchers compiled hundreds of astronomical observations into a high-definition image of a cosmic filament, part of the megastructure that undergirds the universe’s matter. The filament ...

A groundbreaking discovery, recently detailed in The Astrophysical Journal Letters, has unveiled a “mini halo” surrounding one of the most distant galaxy clusters observed to date. This mini ...

A distant cluster of galaxies is wrapped in a vast halo of high-energy particles that could be the work of supermassive black holes or a cosmic particle accelerator.

Galaxy clusters are some of the largest structures in the universe, containing massive amounts of hot gas, dark matter, and hundreds — even thousands — of galaxies. As an individual galaxy moves ...

And on a smaller scale, the high-altitude balloon mission called SuperBIT flew around the world for two months in 2023 imaging galaxy cluster collisions, before crash-landing in Argentina.

Galaxy cluster Abell 1489, as imaged by the International Gemini Observatory, contains more than 200 of the gravitationally-bound systems of stars, stellar remnants, interstellar gas and dust.

The cloud around it is nearly a whopping 20 million light-years across—about 20 times the diameter of our Milky Way galaxy —beating the previous record holder, seen around cluster Abell 2255 ...

Space Astronomers stumble upon ancient radio signals from distant galaxy cluster By Nick Butler, Fox News Published June 29, 2025, 8:51 p.m. ET ...

Gravitational arcs in 'El Gordo' galaxy cluster Date: August 2, 2023 Source: NASA/Goddard Space Flight Center Summary: A new image of the galaxy cluster known as 'El Gordo' is revealing distant ...

Astronomers detect 10 billion-year-old radio waves from a distant galaxy cluster SpARCS1049, revealing a mini-halo that suggests black holes or cosmic collisions energize galaxies.