Gyrd

Gyrd is a fictional planet located in a fictional universe called Zuan. Like the real-life universe, Zuan consists of galaxies, stars, planets, natural satellites, asteroids, and other types of astronomical systems and astronomical objects. In Zuan, astronomical systems, such as galaxies and planetary systems, are groups of astronomical objects, such as planets, natural satellites, and asteroids. Zuan, as a whole, is thought to be cylindrical in shape, and Zuan is so large, only a tiny fraction of it can be viewed from any one point in Zuan. Zuan is at least trillions of light-years in radius from the center of the fictional universe, if not infinitely large. Astronomical bodies and astronomical objects do not orbit a common barycenter of Zuan.

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The center of Zuan has not been definitively defined, and Gyrdian astronomers have hypothesized, but not proven, that an extremely large galaxy that is not in the portion of Zuan that is visible from Gyrd is centered on the center of Zuan, and the purported existence of such a galaxy plays a role in the mythology of some Gyrdian religions. However, since Gyrd orbits Harb, and Harb is part of a intergalactic binary star, or a collection of two stars that rotate around a common barycenter and are not within any galaxy, consisting of Harb and Orzk, Gyrd, or, more specifically, the center of Gyrd's inner core, can be thought of as the center of the visible portion of Zuan (even though all life on Gyrd lives thousands of kilometers from the center of Gyrd's inner core), and the common barycenter of Harb and Orzk can be thought of as the adjusted center of the visible portion of Zuan. The visible portion of Zuan has an approximately 47 million light-year radius from any point on Gyrd that is at Gyrd's mean sea level. Since Gyrd is an oblate spheroid, the visible portion of Zuan is an oblate spheroid as well.