Apparently, it’s moving further away from the Earth each year. At an annual rate of 3.82 centimeters, the moon's creeping ...

Obliquity (40,000-year cycle): The tilt of Earth’s axis changes between 22.1° and 24.5°, affecting how much sunlight reaches different latitudes. ・Precession (21,000-year cycle): Earth ...

Changes in Earth's orbit have helped pace climatic change ... by variations in the cumulative effect of eccentricity and precession (eccentricity modulated precession), whereas higher latitudes ...

and a 20,000-year cycle in the "wobble" — much like a top wobbles — of the Earth's axis (precession). All three of orbital cycles — called Milankovitch cycles — impact African climate on ...