Natural cycles in Earth's rotational axis and its orbit around the sun drive climatic changes, and now researchers have matched up specific points in those cycles to the timing of ice ages.

Deaths of nearby massive stars may have played a significant role in triggering at least two mass extinction events in ...

Notably, a 1976 study found geological evidence showing that two of Earth's parameters — obliquity and precession, or changes in Earth's axial tilt and how the axis wobbles around itself ...

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 ...

Precession is why the Pole Star changes over time. Currently Earth's rotational axis is pointed toward Polaris in Ursa Minor, but in the past it has pointed at different stars, and will do so ...