Since the Rema in Toras HaOlah (1:2) states clearly that we assume rabbinic science to be infallible, and ancient rabbinic knowledge of astronomy complete, a good place to start learning is from our own sources.
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Since the Rema in Toras HaOlah (1:2) states clearly that we assume rabbinic science to be infallible, and ancient rabbinic knowledge of astronomy complete, a good place to start learning is from our own sources.