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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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Newly reactivated jets from the black hole are pushing outward, only to be distorted and compressed by the intense pressure of the massive galaxy cluster surrounding it.

From Science Daily Apr. 13, 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

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

From Salon Oct. 8, 2024

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

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