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Sosigenes criticized both Aristotle and Eudoxus of Cnidus, Eudoxus for their imperfect theory of celestial spheres and also the use of Deferent and epicycle, epicycles, which he felt to be inconsistent with Aristotle's philosophical postulates. He pointed out that the planets varied markedly in brightness, and that solar eclipses are sometimes total eclipse, total and sometimes annular eclipse, annular, suggesting that the distances between the Sun, Moon and Earth were not the same at different eclipses. Sosigenes is perhaps called "the Peripatetic school, Peripatetic" only because of his connection with Alexander. Some ancient evidence may be taken to suggest that he was, in fact, a Stoicism, Stoic. As John Patrick Lynch has written:The other two teachers of Alexander may actually have been the philosophers whom ancient sources called Stoics; in both cases, Herminos/Sosigenes "the Stoic" have been distinguished from Herminos/Sosigenes "the Peripatetic" only on the grounds that the two latter men were teachers of Alexander of Aphrodisias. But it is not improbable that Alexander of Aphrodisias studied with two Stoic teachers and that these two pairs of homonymous contemporaries are actually only two Stoic philosophers.John Patrick Lynch, ''Aristotle's School: A Study of a Greek Educational Institution'', Berkeley: University of California Press, 1972, p. 215.He is often confused with the astronomer Sosigenes of Alexandria, who advised Julius Caesar on the reform of the Roman calendar.
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References
*Irby-Massie G., Keyser P., ''Greek Science of the Hellenistic Era: A Sourcebook'', pages 80–81. Routledge. *Zhmud L., Chernoglazov A., (translator), ''The Origin of the History of Science in Classical Antiquity'', page 231. Walter de Gruyter. * {{DEFAULTSORT:Sosigenes The Peripatetic 2nd-century Greek philosophers Ancient Greek astronomers Roman-era Peripatetic philosophers Roman-era Greeks Roman-era philosophers in Athens