What did Ptolemy believe about the solar system? What is the K in Kepler's law? Define a gibbous moon. Define gibbous moon. What cosmological model did Nicolaus Copernicus propose? How did the Copernicus crater form? What is the purpose of planetary science?
During this same century, the Pythagoreans began to propose that the Earth was circular, based on observation of eclipses (and in all likelihood, observations of the zodiac from different latitudes). By the 4th century BCE, this idea combined with the concept of a geocentric universe to create...
We thank the following heads of the pediatric surgery departments for sharing the data, help, great professionalism and support: Wojciech Choiński (University of Warmia and Mazury in Olsztyn), Przemysław Gałązka (The Nicolaus Copernicus University in Toruń), Jan Godziński (Pediatric Surgery...