precessional

Thus astronomers must have made great progress in their science before they could select as a day for counting from, the epoch when the slow reeling motion of the earth (the so-called precessional motion) brought the Pleiades centrally south, at noon, at the time of the vernal equinox.

Myths and Marvels of Astronomy

When these blades rotate they create large gyroscopic forces sometimes called precessional forces.

EarthToys Alternative Energy News

In his Galactic Alignment theory, John Major Jenkins describes the coming 2012 event as the "precessional convergence of Milky Way and solstice sun."

Primary sources of Maya history - part three

In his Galactic Alignment theory, John Major Jenkins describes the coming 2012 event as the "precessional convergence of Milky Way and solstice sun."

Primary sources of Maya history - part three

The climate change in this period is generally believed to be associated with precessional changes in the distribution of solar radiation, which primarily affect land-sea temperature contrast, and give only a regional warming, plus an enhancement of certain monsoonal circulations.

The Volokh Conspiracy » Economic Climate Change Denialism:

Laskar, J. et.al., "Orbital, precessional, and insolation quantities for the Earth from -20 MYR to +10 MYR"; Astron.

An Astronomical Perspective on Climate Change | Universe Today

The interglacial thus lasts an additional precessional cycle, yielding a total duration of 28 kyr.

Inconvenient Graphic « Climate Audit

I thought of the great precessional cycle that the pole of the earth describes.

The Time Machine, by H. G. Wells

Consider how long it took Milankovitch to calculate variation of insolation every year for 600,000 years for every 5° of latitude due to orbit, tilt and precessional changes.

Letter to NAS « Climate Audit

I thought of the great precessional cycle that the pole of the earth describes.

Science Fiction Hall of Fame