The sphere of the fixed stars is so vast that the Earth's orbit is as a point in comparison.
De revolutionibus orbium coelestium (On the Revolutions of the Heavenly Spheres)
1543
The apparent retrograde motion of the planets is due to the Earth's motion.
De revolutionibus orbium coelestium (On the Revolutions of the Heavenly Spheres)
1543
The order of the planets is determined by their periods of revolution around the Sun.
De revolutionibus orbium coelestium (On the Revolutions of the Heavenly Spheres)
1543
The Moon revolves around the Earth, and accompanies the Earth in its annual orbit around the Sun.
De revolutionibus orbium coelestium (On the Revolutions of the Heavenly Spheres)
1543
The Earth is not the only body that revolves; the other planets also revolve around the Sun.
De revolutionibus orbium coelestium (On the Revolutions of the Heavenly Spheres)
1543
The universe is not finite, but immense, perhaps infinite.
Implied by his model, though not explicitly stated as infinite
The Earth is a planet, just like Mars or Jupiter.
De revolutionibus orbium coelestium (On the Revolutions of the Heavenly Spheres)
1543
The motion of the Earth is natural and not violent.
De revolutionibus orbium coelestium (On the Revolutions of the Heavenly Spheres)
1543
It is not necessary to suppose that the Earth is at rest.
De revolutionibus orbium coelestium (On the Revolutions of the Heavenly Spheres)
1543
The apparent motion of the Sun is merely an illusion caused by the Earth's motion.
De revolutionibus orbium coelestium (On the Revolutions of the Heavenly Spheres)
1543
The Earth is not the center of the universe, but only of the lunar sphere.
De revolutionibus orbium coelestium (On the Revolutions of the Heavenly Spheres)
1543
The Earth has more than one motion.
De revolutionibus orbium coelestium (On the Revolutions of the Heavenly Spheres)
1543
The Sun is the source of light and heat for the planets.
De revolutionibus orbium coelestium (On the Revolutions of the Heavenly Spheres)
1543
The order of the planets is not arbitrary, but follows a definite pattern.
De revolutionibus orbium coelestium (On the Revolutions of the Heavenly Spheres)
1543
The Earth's axis is tilted, causing the seasons.
De revolutionibus orbium coelestium (On the Revolutions of the Heavenly Spheres)
1543
The universe is a harmonious system, governed by mathematical laws.
De revolutionibus orbium coelestium (On the Revolutions of the Heavenly Spheres)
1543
The Earth's motion explains the apparent motion of the stars.
De revolutionibus orbium coelestium (On the Revolutions of the Heavenly Spheres)
1543
The Sun is the true center of the universe.
De revolutionibus orbium coelestium (On the Revolutions of the Heavenly Spheres)
1543
The Earth is not unique in its motion; other planets also move.
De revolutionibus orbium coelestium (On the Revolutions of the Heavenly Spheres)
1543
The apparent size of the planets changes due to their varying distances from Earth.
De revolutionibus orbium coelestium (On the Revolutions of the Heavenly Spheres)
1543