Aurora

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

In collections

Nobody has pulled it yet.

What Wikipedia says

An aurora (pl. aurorae or auroras) is a natural light display in Earth's upper atmosphere caused by charged particles from the Sun colliding with atoms in the atmosphere. These collisions excite oxygen and nitrogen, which then emit light of different colours such as green, red, and purple.

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

Image: Flickr user: Gunnar Hildonen https://www.flickr.com/people/48746111@N04/, CC BY-SA 2.0, via Wikimedia Commons.