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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.


Example Sentences

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See Examples For:

This occurs when a galaxy moves through the hot gas that fills a galaxy cluster.

From Science Daily ● Jun. 1, 2026

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 ● Jan. 7, 2026

What you see here is an actively merging galaxy cluster, Abell 3667, located 700 million light-years away.

From Space Scoop ● Sep. 19, 2025

These include the most distant galaxy cluster; it includes classes of objects like what we call JuMBOs, which stands for "Jupiter Mass Binary Objects."

From Salon ● Oct. 8, 2024

I love a deep field image that shows the most distant galaxy cluster we've ever seen.

From Salon ● Oct. 8, 2024

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