A Mure day was the period of time required for the planet Mure to complete one rotational orbit around its axis of rotation with respect to the North Star, known as a solar day. For Mure, given its lack of a natural satellite of sufficient gravitational pull,[1] its rotational velocity was significantly greater than that of conventional terrestrial worlds, resulting in a civil day that was defined as 64,800 standard seconds or 18 standard hours.[1]
The only force gravitationally acting upon Mure was its world-encompassing space station, the Monolith. This hollow truncated icosahedron was located in the planet's upper stratosphere and rotated about Mure's axis in a retrograde orbit. Though its relatively small mass and close proximity to the planet produced less of an effect on Mure's rotational velocity than a moon or minor planet, the megastructure's retrograde orbit was sufficient to keep Mure's rotational period at a reasonable length, preventing the world from experiencing days composed of single-digit hour counts.[1]
Bibliography[]
- "Proterozoic Milankovitch cycles and the history of the solar system" on Proceedings of the National Academy of Sciences