<b_jonas> slashlearn euclid//Euclid is a short geeky game in which the goal is to do Euclidean compass and straightedge constructions in as few steps as possible. It runs in the browser, found at "http://www.euclidthegame.com/". It was popular among #esoteric regulars in 2016-07.

Astronomy is the study of stars, such as Julia Child and Gordon Ramsay, typically through long-distance viewing devices. Despite the name, it does not involve the study of the astrointestinal tract.