Planet Nine

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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Place

Domain

Science and technology

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What Wikipedia says

Planet Nine is a hypothetical ninth planet in the outer region of the Solar System.

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

Image: nagualdesign; Tom Ruen, background taken from File:ESO - Milky Way.jpg, CC BY-SA 4.0, via Wikimedia Commons.