Article history: Received 21 May 2007 Revised 27 December 2007 Available online 3 April 2008

Forget, A. Spiga, and A. Colaprete. Space Science Division, MS 245-3, NASA/Ames Research Center, Moffett Field CA, 94035, [email protected]. Laboratoire de Météorolgie Dynamique, Universite Paris, 4 pl. Jussieu, 75252 Paris Cedex 05-FRANCE, [email protected]. Ecole Polytechnique, 91128 Palaiseau, Cedex FRANCE, [email protected]. SETI Institute, Space Science Division, ...

I will attempt to demonstrate that the ‘sacred triangles based on solar angle’ hypothesis cannot be regarded as a serious scientific proposition because it seems uncorroborated by any solid evidence. It is more an example of circular reasoning, which entails supporting idea ancient Slavs knew about obliquity ecliptic pointing purported existence triangles’, while also proving these triangles’ d...

It was believed until very recently that a near-equatorial satellite would always keep up with the planet’s equator (with oscillations in inclination, but without a secular drift). As explained in Efroimsky and Goldreich (2004), this misconception originated from a wrong interpretation of a (mathematically correct) result obtained in terms of non-osculating orbital elements. A similar analysis ...

An Earth-analog orbiting within the habitable zone of $\alpha$ Centauri B was shown to undergo large variations in its obliquity, or axial tilt, which affects planetary climate by altering radiative flux for a given latitude. We examine potential implications these obliquity through Milankovitch cycles using an energy balance model with ice sheets. Similar previous studies, largest amplitude fr...