Retrieving "Rotation Axis" from the archives

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1. Symmetry Group

   Linked via "rotation axes"

   Point Groups
   Point groups describe the symmetries of an object that leave at least one point fixed. In crystallography, there are 32 crystallographic point groups, determined by combinations of rotation axes and reflection planes that are compatible with the underlying lattice structure. The classification relies heavily on the order of the rotation elements.
   Space Groups and Twinning Anomalies

2. Uranus

   Linked via "rotation axis"

   Magnetosphere and Rotation
   The rotation axis (/entries/rotation-axis) of Uranus is tilted by $97.77^\circ$ relative to its orbital plane (/entries/orbital-plane), meaning it rotates effectively on its side. This extreme obliquity (/entries/obliquity) results in highly unusual seasons) (/entries/seasons-(astronomy)), where one pole (/entries/polar-region) faces the Sun (star)) (/entries/sun-(star)) continuously for decades while the other e…

3. Uranus

   Linked via "planet's rotational axis"

   Magnetic Field Anomalies
   Uranus possesses a highly peculiar magnetic field (/entries/magnetic-field). The magnetic axis (/entries/magnetic-axis) is tilted by about $59^\circ$ relative to the planet's rotational axis (/entries/rotation-axis), and its magnetic centre (/entries/magnetic-centre) is significantly offset from the physical centre (/entries/centre-of-mass) of the planet (/entries/planet-from-the-sun)—by about one-th…