<P> De revolutionibus orbium coelestium ( On the Revolutions of the Heavenly Spheres ) is the seminal work on the heliocentric theory of the Renaissance astronomer Nicolaus Copernicus ( 1473 -- 1543 ) . The book , first printed in 1543 in Nuremberg , Holy Roman Empire , offered an alternative model of the universe to Ptolemy 's geocentric system , which had been widely accepted since ancient times . </P>
<P> De revolutionibus orbium coelestium ( On the Revolutions of the Heavenly Spheres ) is the seminal work on the heliocentric theory of the Renaissance astronomer Nicolaus Copernicus ( 1473 -- 1543 ) . The book , first printed in 1543 in Nuremberg , Holy Roman Empire , offered an alternative model of the universe to Ptolemy 's geocentric system , which had been widely accepted since ancient times . </P>
what were the views published in de revolutionibus orbium coelestium
what were the views published in de revolutionibus orbium coelestium
an alternative model of the universe
an alternative model of the universe