Daniel W. Graham
Brigham Young University
In Philolaus’ cosmology, the earth revolves around a central fire along with the other heavenly bodies, including a planet called the counter-earth which orbits below the earth. His theory can account for most astronomical phenomena. A common criticism of his theory since ancient times is that his counter-earth does no work in the system. Yet ancient sources say the planet was supposed to account for some lunar eclipses. A reconstruction of Philolaus’ cosmology shows how lunar eclipses occurring at certain times of day cannot be explained by earth blocking the sun’s light. The counter-earth could explain these eclipses
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DOI 10.1007/s00407-014-0147-3
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Aristotle's Criticism of Presocratic Philosophy.R. S. & Harold Cherniss - 1935 - Journal of Philosophy 32 (22):610.
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Anaxagoras and the Comet.Daniel W. Graham - 2013 - Ancient Philosophy 33 (1):1-18.

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