قول بن باز بثبات الأرض وعدم دورانها

Quote: Ala Al-Din Abu'l-Hasan Ali Ibn Ibrahim Ibn al-Shatir (1304 – 1375) was an Arab Muslim astronomer, mathematician, engineer and inventor who worked as muwaqqit religious timekeeper) at the Umayyad Mosque in Damascus, Syria.) Although his system was firmly geocentric—he had eliminated the Ptolemaic equant and eccentrics the mathematical details of his system encompassed those in Nicolaus Copernicus' De revolutionibus which had retained the Ptolemaic eccentric. Copernicus' lunar model was identical to the lunar model of al-Shatir. Noel Swerdlow noted of Copernicus' Commentariolus that his model of Mercury is mistaken, and that "[s]ince it is Ibn ash-Shatir's model, this is further evidence, and perhaps the best evidence, that Copernicus was in fact copying without full understanding from some other source”. All this suggests that Ibn al-Shatir's model may have influenced, if indirectly, Copernicus while constructing the latter's heliocentric model. How Copernicus would have come across al- Shatir's work, exactly, remains an open question, but there are some number of possible routes for first or secondhand transmission. en.wikipedia.org/wiki/Ibn_al-Shatir