[Zuben Elgenubi]

The Earth wobbles in it's rotation and revolution around the sun. Every spinning body not perfectly balanced will wobble.

[kanawa]

What part did continental drift play?

[Paleo Conservative]

The Earth wobbles in it's rotation and revolution around the sun. Every spinning body not perfectly balanced will wobble.

The resulting long term climatic cycle resulting from this wobbling is called the Milankovitch Cycle