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precession of the equinoxes

/prɪˈseʃ.ən əv ðə ˈek.wɪ.nɒk.siːz/

翻译: 地球自转轴相对于固定恒星方向的缓慢而持续的进动,导致春分点每年沿黄道向西移动,使回归年比恒星年短。这一现象主要由太阳和月球对地球赤道隆起部分的引力作用引起。

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phrase

/prɪˈseʃ.ən əv ðə ˈek.wɪ.nɒk.siːz/C2formalscientific
  • zh地球自转轴相对于固定恒星方向的缓慢而持续的进动,导致春分点每年沿黄道向西移动,使回归年比恒星年短。这一现象主要由太阳和月球对地球赤道隆起部分的引力作用引起。

A slow, continuous change in the orientation of Earth's rotational axis relative to the fixed stars, causing the equinoxes to occur earlier each sidereal year. This astronomical phenomenon is caused primarily by gravitational forces from the Sun and Moon acting on Earth's equatorial bulge.

  1. Astronomical phenomenonC2formal

    The slow, gradual shift in the orientation of Earth's axis of rotation, causing the equinoxes to occur earlier each year relative to the fixed stars.

    zh天文现象

    • The precession of the equinoxes completes one full cycle approximately every 26,000 years.
    • Hipparchus is credited with discovering the precession of the equinoxes in ancient Greece.
    • Astronomers must account for the precession of the equinoxes when calculating star positions over long periods.