Precession - Wikipedia
Precession is a change in the orientation of the rotational axis of a rotating body. In an appropriate reference frame it can be defined as a change in the first Euler angle, whereas the third Euler angle defines the rotation itself.
Milankovitch (Orbital) Cycles and Their Role in Earth’s Climate
2020年2月27日 · Precession – As Earth rotates, it wobbles slightly upon its rotational axis, like a slightly off-center spinning toy top. This wobble is due to tidal forces caused by the gravitational influences of the Sun and Moon that cause Earth to bulge at the equator, affecting its rotation.
Axial precession - Wikipedia
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. [2] .
Milankovitch cycles - Wikipedia
Milankovitch cycles describe the collective effects of changes in the Earth's movements on its climate over thousands of years. The term was coined and named after the Serbian geophysicist and astronomer Milutin Milanković.
(7) Precession - NASA
Comparing observations more than a century apart, Hipparchus proposed that the axis around which the heavens seemed to rotate shifted gradually, though very slowly. Viewed from Earth, the Sun moves around the ecliptic, one full circuit each year.
precession of the equinoxes - Encyclopedia Britannica
Precession was the third-discovered motion of Earth, after the far more obvious daily rotation and annual revolution. Precession is caused by the gravitational influence of the Sun and the Moon acting on Earth’s equatorial bulge. To a much lesser extent, the planets exert influence as well.
Astronomy: precession of earth - Washington State University
Apsidal (Earth's orbit's major axis) precession P = 112,000 yr, combines with the 25,770 yr precession to make it about 21,630 years for the Vernal Equinox to cycle 360 degrees.
AstroPages | Precession - Western Washington University
pole describes during a complete cycle of the precession. The Earth wobbles in space like an out-of-balance top. Each full wobble takes about 25,765 years.
What is the circle that Earth’s axis traces out in its 26,000-year ...
2012年7月23日 · Our planet exhibits other motions as well — the most dramatic of them is known as precession. You can see precession every time you spin a top. As the top begins to slow, it also starts to wobble...
Eccentricity, Precession, Axial Tilt - Geology Science
2023年10月11日 · Precession: Precession involves the wobbling motion of Earth’s axis, similar to the way a spinning top wobbles. This cycle has a periodicity of about 26,000 years and affects the orientation of the Earth’s axis.