[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

[Zuben Elgenubi]

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

Yes, there are fluctuating temperature gradients associated with solar energy absorbed during this process. Thank you for citing the source.