"Ibn al-Shatir was the first astronomer to have successfully challenged the Ptolemaic cosmological system of planets revolving around ... Shatir's astronomy and his ideas that the Earth and other ...

When Alexander the Great conquered Egypt in 332 BCE, he signaled the beginning of the era of Ptolemaic rule. His general ...

Did Copernicus borrow his cosmological theory from an earlier Muslim scientist? New research finds striking resemblance between Copernicus’s heliocentric treatise and a Muslim scientist’s cosmological ...