Related articles:
Greek astronomy
Heliocentrism
Venus
De revolutionibus orbium coelestium
Almagest
Celestial sphere
Aristarchus of Samos
Firmament
Planetarium
Earth
Key terms:
geocentric
planets
ptolemaic
sphere
venus
astronomers
astronomy
epicycle
observations
geocentric model
deferent
heliocentric
ptolemaic system
equant
copernicus
cosmologies
aristotle
phases
ptolemy
revolved
galileo
celestial
geocentric system
maragha
parallax
planetary
aristotelian
kepler
tycho
each planet
venus and mercury
solar system
plato
retrograde motion
copernican system
ptolemaic astronomy
teoria
heavenly bodies
gravitation
earth was a sphere
pythagoreans
superseded
century bc
revolved around
eccentric
other planets
galileo galilei
ancient greek
hellenistic
fixed stars
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