Dutch astronomer Willem de Sitter, born May 6, 1872, studied mathematics and physics at the University of Groningen, developing an interest in astronomy there and furthering it with work at Cape ...

pt. I. Ancient astronomy, from its origins to the end of the Middle Ages. The origins of astronomy -- Primitive astronomy in China, Chaldea and Egypt -- The cosmology of primitive peoples -- The ...

The earliest cosmological ideas -- The early Greek philosophers -- The Pythagorean school -- Plato -- The homocentric spheres of Eudoxus -- Aristotle -- Herakleides and Aristarchus -- The theory of ...

Women and ethnic minority groups are still significantly underrepresented in astronomy and geophysics despite attempts to bring about change over the past decade, research has shown.