Oerth is the name of the fictional planet on which the earliest Dungeons & Dragons setting – that of Greyhawk – takes place. Oerth has an axis tilt of 30 degrees, which results in larger polar caps and would have caused shorter summers in temperate areas but for wizardly and divine magic shifting weather patterns to be more favorable to the populace (at least the god-fearing folks). The exploration of other worlds is one of the most enduring themes of science fiction. ... The original Dungeons & Dragons set Dungeons & Dragons (abbreviated as D&D or DnD) is a fantasy role-playing game (RPG) published by Gary Gygax and David Arneson in January 1974. ... Greyhawk is a fictional world for the role-playing game Dungeons & Dragons. ... Earth has two massive sheets of ice called polar ice caps, one in the north floating in the Arctic Ocean and the other in the south approximately covering Antarctica. ...

According to the paper by Gary Holian in Oerth Journal, Oerth's circumference is about 42,024 km, and its radius measures 6,714 km, about 1% more than that of Earth. There is no flattening of the planet sphere due to rotation, and divine power is again hinted at. To help compare different orders of magnitude, this page lists lengths starting at 107 m (10,000 km). ... To help compare different orders of magnitude this page lists lengths between 106 and 107 m (1,000 and 10,000 km). ... Earth, also known as the Earth or Terra, is the third planet outward from the Sun. ...

Only about one sixth of Oerth's surface, the Flanaess, is accurately detailed. Data on Aquaria and Hepmonaland are based on fanwork, and these continents are not officially supported by the game's publisher, TSR. Flannaess is one of the four continents of the fictional world of Oerth in the Dungeons & Dragons campaign setting Greyhawk. ... TSR was a company formed as Tactical Studies Rules in 1972 by Gary Gygax and Don Kaye (and others later) to publish the rule set for the Dungeons & Dragons role-playing game. ...

The name Oerth is similar to Aerth, the world of Jack Vance's novels, which in turn is an anagram of Earth. John Holbrook Vance (b. ... An anagram (Greek ana-, back, and graphein, to write) is the result of permuting the letters of a word or words in such a manner as to produce other words that possess linguistic meaning. ...

External links

• Measuring up the Oerth (http://www.tc.umn.edu/~monax002/Council/OJ4/measure.html), the aforementioned paper where Oerth's dimensions are given.