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...the Stagehands, who some believe actually ''created'' the entire universe of Icathiria. ...of expansion for their home universes, which suggests different universes of origin.

...to have its spherical (or more accurately [[ellipsoid]]al shape) by virtue of its own gravity; a smaller body artificially shaped into a sphere would not ...ar terminology. In any case, worlds which do not satisfy all the criteria of planets but which, like planets, comprise discrete areas which may compose

...ysical law]]s seem invariant under translation, rotation, and a large host of other [[transformation (mathematics)|transformation]]s. {{main|Physics of Xi}}