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Scientific Publications


1. J.A. A’Hearn, M.M. Hedman, M. El Moutamid. Dynamics of Multiple Bodies in a Corotation Resonance: Conserved Quantities and Relevance to Ring Arcs. The Astrophysical Journal 882:66 (2019) [arXiv] [PDF]


Other Online Material


Improving the Calendar

– On the Planetary Status of Pluto

Science and Faith

– What Is the Importance of Science to Faith?  (backup link)

– Nothing and Everything (A Response to Lawrence Krauss’s A Universe from Nothing)

– Galileo’s Letter to Grand Duchess Christina

– La vida en la Tierra ¿y en Gliese 581g? Un problema interdisciplinar