Book I

E110072

Book I is the opening section of Nicolaus Copernicus’s "De revolutionibus orbium coelestium," where he lays out the foundational principles of his heliocentric model of the cosmos.

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Book I canonical 1

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Predicate Object
instanceOf book section
part of scientific treatise
author Nicolaus Copernicus
contains arguments for Earth’s motion
axioms of Copernican cosmology
definitions of basic astronomical terms
general description of the world system
ordering of celestial spheres
contrastsWith Ptolemaic system
surface form: Ptolemaic geocentric system
describes Earth as a planet
Sun near the center of the universe
annual revolution of the Earth around the Sun
daily rotation of the Earth on its axis
retrograde motion of planets as an apparent effect of Earth’s motion
field astronomy
cosmology
follows prefatory materials of De revolutionibus orbium coelestium
genre scholarly prose
hasWorkTitle Liber Primus (Latin title)
historicalSignificance challenged traditional Aristotelian and Ptolemaic cosmology
first systematic exposition of Copernicus’s heliocentric principles
influenced Scientific Revolution
early modern astronomy
language Latin
mainTopic apparent motion of the celestial sphere
basic astronomical assumptions and axioms
foundational principles of Copernican astronomy
heliocentric cosmological system
motion of the Earth
order of the planets
structure of the universe
partOf De revolutionibus orbium coelestium
positionInWork first book
precedes De revolutionibus orbium coelestium
surface form: Book II (De revolutionibus orbium coelestium)
publicationYear 1543
purpose to introduce the heliocentric hypothesis
to provide theoretical foundations for later mathematical treatment in De revolutionibus
workLocation Royal Prussian cities of Frombork and Frauenburg (historical) as Copernicus’s place of work

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