Each coloured circle depicts a galaxy group or cluster. The richest galaxy clusters are marked in red; these are the richest galaxy clusters in the Hercules and Leo superclusters. The side panels show ...

Galaxy clusters are the most massive objects in the universe held together by gravity, containing up to several thousand individual galaxies and huge reservoirs of superheated, X-ray-emitting gas. The ...

We often think of galaxies either as individual “island universes” or as a member of a galaxy cluster. But there is another category of association: galaxy groups. Many galaxies — perhaps most in the ...

Astronomers have detected the farthest galaxy group so far, three galaxies that have helped to alter the universe by resulting in a "sweeping cosmic makeover." The group of galaxies, known as EGS77, ...

A monstrously large cluster of galaxies is devouring a nearby smaller galactic grouping, causing it to blast out a record-breaking tail of hot gas from its rear. At 1.5 million light-years-long, the ...

HONG KONG--(BUSINESS WIRE)--Galaxy Entertainment Group (“GEG”, “Company” or the “Group”) (HKEx stock code: 27) today reported selected unaudited financial data for the three months period ended 30 ...

Galaxy clusters are the most massive objects in the universe held together by gravity, containing up to several thousand individual galaxies and huge reservoirs of superheated, X-ray-emitting gas. The ...