Copernicus, a Polish astronomer who lived in the 16th century, is believed to be one of early European scientists to have put forward the theoretical model that the Sun was the center of the solar ...

Ibn-al-shatir's lunar model from which Copernicus is reported to have borrowed in composing his cosmological model. Credit: This work is in the public domain in the ...

Ibn-al-shatir's lunar model from which Copernicus is reported to have borrowed in composing his cosmological model. Credit: This work is in the public domain in the United States. New research has ...