Assertion: precession | /r/HasProperty | gradual change
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Source sentences:
text: Furthermore, this article mentions "planetary precession" now renamed "precession of the ecliptic" which is the gradual change in the inclination of Earth's orbit relative to the invariable plane of the solar system and the combination of "precession of the equator" and "precession of the ecliptic" which is called "general precession" and has been so named for at least one and a half centuries.
text: The precession of the equinoxes is a gradual changing in the direction of the Earth's rotation axis, which causes the position of the celestial poles to drift through the constellations at a continuous rate of roughly 20 arcseconds per year.
text: Precession is the gradual change in the direction of the Earth's spin axis.
text: Precession is the gradual change in the direction of the Earth's spin axis.