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Conjunction Opposition Greatest Elongation Retrograde Prograde Superior Planet Inferior Planet Geocentric Heliocentric Deferent Epicycle. +. +. Conjunction. Opposition. +. Inferior Never Far From Sun Greatest Elongation Conjunction Retrograde at every other Conjunction.
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Conjunction Opposition Greatest Elongation Retrograde Prograde Superior Planet Inferior Planet Geocentric Heliocentric Deferent Epicycle
+ + Conjunction
Inferior Never Far From Sun Greatest Elongation Conjunction Retrograde at every other Conjunction Superior Opposition Conjunction Retrograde at every Opposition
Planets Retrograde Prograde Heliocentric Geocentric Ancient Astronomy Sun/Moon/Earth Phases Eclipses Solar Lunar
Theories Geocentric Earth at Center Heliocentric Sun at Center
Geocentric Model by Hipparchus Improved by Ptolomy Deferents Epicycles
Hipparchus + Deferent
Hipparchus + Deferent
Hipparchus Epicycle + Deferent
Hipparchus Epicycle + Deferent
Hipparchus Epicycle + Deferent
Hipparchus Epicycle + Deferent
Hipparchus Epicycle + Deferent
Hipparchus Epicycle + Deferent
Hipparchus Epicycle + Deferent
Hipparchus Epicycle + Deferent
Hipparchus Epicycle + Deferent
Hipparchus Epicycle + Deferent
Hipparchus Epicycle + Deferent
Hipparchus Epicycle + Deferent
Hipparchus Prograde + Retrograde
Hipparchus Prograde + Retrograde
Inferior Planets Inferior Epicycles Tied Between Earth and Sun + ¤
Inferior Planets Inferior Epicycles Tied Between Earth and Sun + ¤
+ Inferior Planets Inferior Epicycles Tied Between Earth and Sun ¤
Inferior Planets Retrograde at One Conjunction Prograde at Other Conjunction + ¤
Superior Planets ¤ + Retrograde at Opposition if Timed Right This one is timed wrong.
Superior Planets + Retrograde at Opposition if Timed Right This one is timed right. ¤
Ptolomy Earth is not at the center of deferents. + ¤
Heliocentric Superior planets orbit farther from the sun, and slower. Inferior planets orbit closer to the sun, and faster. ¤ Å
Heliocentric Clockwise is retrograde. ¤ Å Conjunction
Heliocentric Counterclockwise is prograde. Conjunction ¤ Å
Heliocentric Clockwise is retrograde. ¤ Å Opposition
Heliocentric Counterclockwise is prograde. ¤ Å Conjunction
Aristotle Proved Heliocentric Model Wrong Proved Earth Does Not Orbit Sun Proved Earth Does Not Move Phases of the Moon Moon is a Sphere Moon orbits Earth Moon closer than Sun Moon gets light from Sun Earth is a Sphere Lunar Eclipses Altitude of Polaris
Parallax Parallax is the apparent motion of something, caused by the motion of the observer.
Parallax Å ¤ Å
Aristotle Earth Corrupt and Changeable Beyond Earth Perfect and Unchangeable Law of Motion Force Required to Keep Things Moving What keeps arrows in flight?
Planets Retrograde Prograde Heliocentric Geocentric Ancient Astronomy Sun/Moon/Earth Phases Eclipses Solar Lunar