Open cluster

Rarity: Rare

A topic known well beyond its field, found in many languages.

Rarity follows how well known the article is: its views on the French and English Wikipedia over a year, and the number of languages it exists in.

At a glance

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Science and technology

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What Wikipedia says

An open cluster is a type of star cluster made of tens to a few thousand stars that were formed from the same giant molecular cloud and have roughly the same age. More than 1,100 open clusters have been discovered within the Milky Way galaxy, and many more are thought to exist.

Excerpt from the Wikipedia article “Open cluster”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: ja:2MASS, Public domain, via Wikimedia Commons.