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superseded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