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11 - Rotational Dynamics of Celestial Bodies

from Part III - Modern Celestial Mechanics

Published online by Cambridge University Press:  25 June 2026

Antonio Giorgilli
Affiliation:
Istituto Lombardo Accademia di Scienze e Lettere, Milan
Ugo Locatelli
Affiliation:
Università degli Studi di Roma 'Tor Vergata'
Marco Sansottera
Affiliation:
Rocketloop Labs, Germany
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Summary

Since the Chaldean epoch in Mesopotamia, the challenging phenomenon of the phases of the Moon has raised the interest of astronomers, even more than the motion of the Sun. Many ancient calendars, including Chaldean’s, were either lunar or luni-solar ones [21]; they were indeed based on the lunar period, or on attempts to find a reasonable compromise between the annual period of the Sun, actually the seasons, and the cycles of the Moon.

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