The seven assumptions of the model in this man's Little Commentary includes the belief in perfect, circular orbits, though the evidence gathered in his On the Revolutions of the Celestial Spheres was used by Galileo to promote a change in the way people viewed the solar system.
This man declined an invitation to advise the Fifth Lateran Council on calendar reform, and his observation of an eclipse of Aldebaran helped him determine the diameter of the Moon. The seven assumptions of the model in this man's Little Commentary includes the belief in perfect, circular orbits, though the evidence gathered in his On the Revolutions of the Celestial Spheres was used by Galileo to promote a change in the way people viewed the solar system. Arguing against the Ptolemaic system of astronomy, name this Polish scientist who developed the heliocentric model of the universe.
This man declined an invitation to advise the Fifth Lateran Council on calendar reform, and his observation of an eclipse of Aldebaran helped him determine the diameter of the Moon.
Nicolaus Copernicus [or Mikołaj [MEE-koh-wye] Kopernik]