Exosphere

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

Class

Notion

Domain

Science and technology

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What Wikipedia says

The exosphere (; from Ancient Greek ἔξω (éxō) 'outer, outside' and -sphere) is a thin, atmosphere-like volume surrounding a planet or natural satellite where molecules are gravitationally bound to that body, but where the density is so low that, as in outer space, the molecules are essentially collision-less.

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

Image: KrAtul, CC BY-SA 3.0, via Wikimedia Commons.