galaxy cluster

American  

[gal-uhk-see kluhs-ter] / ˈgæl ək si ˈklʌs tər /

noun

1. Astronomy. an enormous grouping of hundreds or thousands of galaxies held together by shared gravity. Compare supercluster and open cluster.

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Example Sentences

High resolution images from Hubble revealed four closely packed globular clusters inside the Perseus galaxy cluster, located 300 million light-years from Earth.

From Science Daily

A team of astronomers from several countries, led by researchers in Canada, has identified a galaxy cluster that appears far earlier and far hotter than current science predicts.

From Science Daily

The findings, published on January 5 in Nature, raise serious challenges for widely accepted models of galaxy cluster formation.

From Science Daily

To make the discovery, the researchers looked back roughly 12 billion years to study a young galaxy cluster known as SPT2349-56.

From Science Daily

Current theories suggest that the gas making up the intracluster medium slowly gathers and heats up as gravity pulls an unstable galaxy cluster inward over time.

From Science Daily