The inner, solid part of Earth's core behaves like a spinning top; it rotates around its axis along with the entire environment and makes cyclical movements. This occurs with regularity every 8.5 ...

Ocean circulation and pressure on the seabed that pulls on the Earth’s axis. The “Chandler Wobble” – a natural shifting of the Earth’s axis as the planet is not perfectly spherical ...

First of all the rotation axis changes relative to the Earth’s surface which is referred to as polar motion. The main component of polar motion is the so-called Chandler wobble. Although it was ...

Precession refers to the "wobble" of this rotational axis. Let's go back to that imaginary line extending through Earth's rotational axis and picture ourselves looking down on one of Earth's poles.

Now, Barker and his colleagues say they've finally untangled these parameters' effects. Earth's axis is currently tilted at a 23.5-degree angle away from vertical as it rotates around the sun ...

They were able to match these changes with small cyclical variations in the shape of Earth's orbit of the sun, its wobble, and the angle at which its axis is tilted. "We found a predictable ...

including a 100,000 year cycle in the shape of the orbit (eccentricity), a 41,000 year cycle in the tilt of the Earth's axis (obliquity) and a 20,000-year cycle in the "wobble" — much like a top ...