To: DWPittelli
Further, blaming the mars warming on its Milankovitch cycles seems far-fetched to me. Is it just me or do Milankovitch cycles remind you of Ptolemaic epicycles?
39 posted on
03/12/2007 7:30:30 PM PDT by
FreedomCalls
(It's the "Statue of Liberty," not the "Statue of Security.")
To: FreedomCalls
FreedomCalls: "Is it just me or do Milankovitch cycles remind you of Ptolemaic epicycles?"
Milankovitch cycles are real, and most likely the primary cause of Earth's ice ages. From Wikipedia: "Milankovitch cycles are the collective effect of changes in the Earth's movements upon its climate, named after Serbian civil engineer and mathematician Milutin Milanković. The eccentricity, axial tilt, and precession of the Earth's orbit vary in several patterns, resulting in 100,000 year ice age cycles of the Quaternary glaciation over the last few million years. The Earth's axis completes one full cycle of precession approximately every 26,000 years. At the same time, the elliptical orbit rotates, more slowly, leading to a 22,000 year cycle in the equinoxes. In addition, the angle between Earth's rotational axis and the normal to the plane of its orbit changes from 21.5 degrees to 24.5 degrees and back again on a 41,000 year cycle... A number of other terms vary between 95,000 and 136,000 years, and loosely combine into a 100,000 year cycle."
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