Black triangle

Rarity: Common

The most frequent rarity: most Wikipedia articles become Commons.

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

Black triangles are UFOs reported as having a triangular shape and dark color, typically observed at night, described as large, silent, hovering, moving slowly, and displaying pulsating, colored lights which they can turn off.

Excerpt from the Wikipedia article “Black triangle (UFO)”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: No machine-readable author provided. Bach01~commonswiki assumed (based on copyright claims)., CC BY-SA 3.0, via Wikimedia Commons.