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  2. Axial precession - Wikipedia

    en.wikipedia.org/wiki/Axial_precession

    In particular, axial precession can refer to the gradual shift in the orientation of Earth's axis of rotation in a cycle of approximately 26,000 years. [1] This is similar to the precession of a spinning top, with the axis tracing out a pair of cones joined at their apices. The term "precession" typically refers only to this largest part of the ...

  3. Precession - Wikipedia

    en.wikipedia.org/wiki/Precession

    The torque-free precession rate of an object with an axis of symmetry, such as a disk, spinning about an axis not aligned with that axis of symmetry can be calculated as follows: [1] = ⁡ where ω p is the precession rate, ω s is the spin rate about the axis of symmetry, I s is the moment of inertia about the axis of symmetry, I p is moment ...

  4. Glossary of astronomy - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_astronomy

    A slow, continuous, gravity-induced change (a precession) in the orientation of an astronomical body 's axis of rotation. The term often refers in particular to the gradual shift in the orientation of Earth's rotational axis with respect to its orbital plane over a cycle of approximately 25,772 years, which is caused predominantly by the ...

  5. Pole star - Wikipedia

    en.wikipedia.org/wiki/Pole_star

    Due to axial precession, the lunar pole describes a small circle on the celestial sphere every 18.6 years. e.g. Moore, Patrick (1983), The Guinness Book of Astronomy Facts & Feats, p. 29, In 1968 the north pole star of the Moon was Omega Draconis; by 1977 it was 36 Draconis. The south pole star is Delta Doradus.

  6. Sidereal Astrology Might Change The Way You Read Your Birth Chart

    www.aol.com/lifestyle/sidereal-astrology-might...

    The main thing that separates sidereal astrology from tropical astrology is that it factors in the concept of axial precession. “The sun does not come back to the same point in the sky every ...

  7. Portal:Geophysics - Wikipedia

    en.wikipedia.org/wiki/Portal:Geophysics

    In astronomy, axial precession is a gravity-induced, slow, and continuous change in the orientation of an astronomical body's rotational axis. In the absence of precession, the astronomical body's orbit would show axial parallelism. In particular, axial precession can refer to the gradual shift in the orientation of Earth's axis of rotation in ...

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  9. Milankovitch cycles - Wikipedia

    en.wikipedia.org/wiki/Milankovitch_cycles

    Axial precession is the trend in the direction of the Earth's axis of rotation relative to the fixed stars, with a period of about 25,700 years. Also known as the precession of the equinoxes, this motion means that eventually Polaris will no longer be the north pole star .