Ptolemy and the Geocentric Model
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Ptolemy and the Geocentric Model

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Ptolemy and the Geocentric Model Ptolemy and the Geocentric Model Presentation Transcript

  • Early Astronomy
  • Part: 1 of 2
  • Ptolemy’sUniverse
  • Many ancient cultures
  • Many ancient cultures have taken a keen interest…
  • …in the changing
  • …in the changing night sky.
  • Many artifacts have survived
  • Many artifacts have survived until the present time…
  • …which make that fact
  • …which make that fact more than abundantly clear.
  • Artifacts
  • Artifacts from Antiquity
  • The Quadrant
  • The Quadrant
  • The Quadrant
  • The QuadrantOne of the earliest tools
  • The QuadrantOne of the earliest tools for astronomical observation…
  • The Quadrant
  • The Quadrant …was an instrument
  • The Quadrant…was an instrument known as the quadrant.
  • The Quadrant
  • The QuadrantThe quadrant would divide the sky
  • The QuadrantThe quadrant would divide the sky into (4) segments of 6-hour arcs
  • The Quadrant
  • The QuadrantIt could then calculate a star’s latitude
  • The QuadrantIt could then calculate a star’s latitude above the Earth’s surface.
  • The Astrolabe
  • The Astrolabe
  • The Astrolabe
  • The AstrolabeThe ancient Persian Astrolabe
  • The AstrolabeThe ancient Persian Astrolabe was another useful tool in Astronomy.
  • The Astrolabe
  • The AstrolabeThe astrolabe was similar
  • The AstrolabeThe astrolabe was similar to an early version of a star-chart,...
  • The Astrolabe
  • The Astrolabe…and was useful in predicting the positions
  • The Astrolabe …and was useful in predicting thepositions of the Sun, Moon, planets,
  • Stonehenge
  • Stonehenge
  • Stonehenge
  • StonehengeOne of the best examples
  • StonehengeOne of the best examples of an early interest in
  • Stonehenge
  • Stonehenge…is found in the ancient stone monolith
  • Stonehenge…is found in the ancient stone monolith known as “Stone Henge”.
  • Stonehenge
  • StonehengeBuilt between 2,000-3,000 B.C.
  • StonehengeBuilt between 2,000-3,000 B.C. in southern England,
  • Stonehenge
  • Stonehenge…Stone Henge still stands today
  • Stonehenge…Stone Henge still stands today as a popular tourist attraction.
  • Stonehenge
  • Stonehenge
  • Stonehenge
  • Stonehenge
  • StonehengeThe positions of the great rocks
  • StonehengeThe positions of the great rocks of Stone Henge…
  • Stonehenge
  • Stonehenge…were used to mark the important events
  • Stonehenge…were used to mark the important events during the celestial calendar.
  • Stonehenge
  • StonehengeThe risings of the Moon and the Sun,
  • StonehengeThe risings of the Moon and the Sun, for example,…
  • Stonehenge
  • Stonehenge…can be seen in the photos above
  • Stonehenge…can be seen in the photos above during the
  • Artwork
  • Artwork
  • Artwork
  • Artwork
  • ArtworkThroughout the history
  • ArtworkThroughout the history of mankind,…
  • Artwork
  • Artwork…Astronomy has played a prominent role
  • Artwork…Astronomy has played a prominent role in various forms of artwork.
  • Artwork
  • ArtworkShown above are several examples
  • ArtworkShown above are several examples of paintings featuring Astronomy
  • Artwork
  • ArtworkVan Gogh’s famous “Starry Night”
  • ArtworkVan Gogh’s famous “Starry Night” is the painting shown on
  • Artwork Starry NightVan Gogh’s famous “Starry Night” is the painting shown on
  • Artwork Starry NightVan Gogh’s famous “Starry Night” is the painting shown on
  • The Pyramids
  • The Pyramids
  • The Pyramids
  • The PyramidsThe pyramids of the Sun and the Moon
  • The PyramidsThe pyramids of the Sun and the Mooncan be found near Mexico City, Mexico.
  • The Pyramids
  • The PyramidsBuilt by the ancient Aztec civilization
  • The PyramidsBuilt by the ancient Aztec civilization around 100 A.D.,…
  • The Pyramids
  • The Pyramids…they are still a popular tourist attraction
  • The Pyramids…they are still a popular tourist attraction even 2,000 years later.
  • …and there are many, more examples
  • …and there are many, more examplesof the ancients’ interest in Astronomy
  • …and there are many, more examplesof the ancients’ interest in Astronomy from the periods of antiquity.
  • But unlike today,
  • But unlike today, the need to understand Astronomy
  • But unlike today, theneed to understand Astronomy was neither scientific nor religious.
  • The ancients instead
  • The ancients instead had more practical reasons
  • The ancients instead had more practical reasons to study the Heavens.
  • Navigation
  • Navigation
  • Navigation
  • NavigationThe ancient seafarers,
  • NavigationThe ancient seafarers, for example,…
  • Navigation
  • Navigation…needed to understand the stars
  • Navigation…needed to understand the stars in order to navigate their vessels by
  • Farming
  • Farming
  • Farming
  • FarmingAdditionally, farmers needed to know
  • FarmingAdditionally, farmers needed to know how to predict the seasons…
  • Farming
  • Farming…in order to know on which dates
  • Farming…in order to know on which dates to plant and to harvest their crops.
  • Cosmetology
  • Cosmetology VS
  • Cosmetology VS Cosmology
  • Cosmetology
  • CosmetologyIf you wanted to study
  • Cosmetology If you wanted to studythe field of cosmetology,…
  • Cosmetology
  • Cosmetology …then one day
  • Cosmetology…then one day you might want to work here.
  • Cosmetology…then one day you might want to work here.
  • Cosmology
  • CosmologyHowever, if you would rather study
  • CosmologyHowever, if you would rather study the field of cosmology,…
  • Cosmology
  • Cosmology…then you might prefer to work
  • Cosmology…then you might prefer to work in an observatory like this
  • Cosmology…then you might prefer to work in an observatory like this
  • Cosmology…then you might prefer to work in an observatory like this
  • Cosmology
  • Cosmology –
  • Cosmology – The scientific study
  • Cosmology – The scientific study of the structure and evolution
  • Cosmology – The scientific studyof the structure and evolution of the Universe.
  • The Sun
  • The Sun
  • The Sun The Planets
  • The Sun The Planets
  • The Sun The Planets The Earth
  • The Sun The Planets The Earth
  • The MoonThe Sun The Planets The Earth
  • The Moon The Sun The Planets The EarthThe Universe,
  • The Moon The Sun The Planets The EarthThe Universe, to the ancient Greeks,…
  • The MoonThe Sun The Planets The Earth
  • The MoonThe Sun The Planets The Earth …was basically
  • The Moon The Sun The Planets The Earth…was basically just the Solar System.
  • Perseus Galaxy Cluster
  • Perseus Galaxy Cluster
  • Perseus Galaxy ClusterToday’s view of the Universe, however,
  • Perseus Galaxy ClusterToday’s view of the Universe, however, is quite a bit different.
  • Perseus Galaxy Cluster
  • Perseus Galaxy ClusterCosmology entails looking at the Universe
  • Perseus Galaxy ClusterCosmology entails looking at the Universe on scales so large today…
  • Perseus Galaxy Cluster
  • Perseus Galaxy Cluster…that even entire galaxies only appear
  • Perseus Galaxy Cluster…that even entire galaxies only appear as mere pinpoints of light in
  • Perseus Galaxy Cluster
  • Perseus Galaxy ClusterShown above is the Perseus Galaxy Cluster
  • Perseus Galaxy ClusterShown above is the Perseus Galaxy Cluster located 300 million LYs away from Earth.
  • Perseus Galaxy Cluster
  • Perseus Galaxy Cluster And each pinpoint of light
  • Perseus Galaxy ClusterAnd each pinpoint of light is a galaxy,…
  • Perseus Galaxy Cluster
  • Perseus Galaxy Cluster …representing 100 billion
  • Perseus Galaxy Cluster…representing 100 billion or more stars.
  • Perseus Galaxy Cluster…representing 100 billion or more stars.
  • Perseus Galaxy Cluster…representing 100 billion or more stars.
  • Perseus Galaxy Cluster…representing 100 billion or more stars.
  • Perseus Galaxy Cluster…representing 100 billion or more stars.
  • Perseus Galaxy Cluster…representing 100 billion or more stars.
  • Perseus Galaxy Cluster…representing 100 billion or more stars.
  • Perseus Galaxy Cluster…representing 100 billion or more stars.
  • Perseus Galaxy Cluster…representing 100 billion or more stars.
  • Perseus Galaxy Cluster…representing 100 billion or more stars.
  • Perseus Galaxy Cluster
  • Perseus Galaxy Cluster Imagine the total number of planets
  • Perseus Galaxy ClusterImagine the total number of planets contained in all of these galaxies.
  • Ptolemy and the
  • Ptolemy and theGeocentric Model
  • Claudius Ptolemy
  • Claudius Ptolemy 83 A.D. – 165 A.D.
  • Claudius Ptolemy
  • Claudius PtolemyThe ancient Greek astronomer,
  • Claudius PtolemyThe ancient Greek astronomer, Claudius Ptolemy,…
  • Claudius Ptolemy
  • Claudius Ptolemy…devised the Geocentric Model
  • Claudius Ptolemy…devised the Geocentric Model of the Universe.
  • The Geocentric Model
  • The Geocentric Model In the geocentric model
  • The Geocentric ModelIn the geocentric model of the Universe,…
  • The Geocentric Model
  • The Geocentric Model …the Earth lay at the center
  • The Geocentric Model…the Earth lay at the center of all creation.
  • The Geocentric Model
  • The Geocentric Model Everything else in the Heavens
  • The Geocentric ModelEverything else in the Heavens then orbited the stationary Earth.
  • The Geocentric ModelEverything else in the Heavens then orbited the stationary Earth.
  • The Geocentric ModelEverything else in the Heavens then orbited the stationary Earth.
  • The Geocentric ModelEverything else in the Heavens then orbited the stationary Earth.
  • The Geocentric ModelEverything else in the Heavens then orbited the stationary Earth.
  • The Geocentric ModelEverything else in the Heavens then orbited the stationary Earth.
  • The Geocentric ModelEverything else in the Heavens then orbited the stationary Earth.
  • The Geocentric ModelEverything else in the Heavens then orbited the stationary Earth.
  • The Geocentric ModelEverything else in the Heavens then orbited the stationary Earth.
  • The Geocentric Model
  • The Geocentric Model But unlike
  • The Geocentric ModelBut unlike the Sun, Moon, and stars,…
  • The Geocentric Model
  • The Geocentric Model…the ancients noticed that the planets
  • The Geocentric Model…the ancients noticed that the planets would wander across the night sky.
  • Prograde Motion
  • If you watch the motions of the planets
  • If you watch the motions of the planets over many months,…
  • …you’ll notice that they drift eastward
  • …you’ll notice that they drift eastward across the night sky.
  • March …you’ll notice that they drift eastward across the night sky.
  • April…you’ll notice that they drift eastward across the night sky.
  • May…you’ll notice that they drift eastward across the night sky.
  • June…you’ll notice that they drift eastward across the night sky.
  • July…you’ll notice that they drift eastward across the night sky.
  • Aug…you’ll notice that they drift eastward across the night sky.
  • Sept…you’ll notice that they drift eastward across the night sky.
  • Oct…you’ll notice that they drift eastward across the night sky.
  • Nov…you’ll notice that they drift eastward across the night sky.
  • Nov Oct Sept Aug July June May AprilMarch …you’ll notice that they drift eastward across the night sky.
  • Nov Oct Sept Aug July June May AprilMarch …you’ll notice that they drift eastward across the night sky.
  • Nov Oct Sept Aug July June May AprilMarch …you’ll notice that they drift eastward across the night sky.
  • ar d Nov e as t w Oct Sept Aug July June May AprilMarch …you’ll notice that they drift eastward across the night sky.
  • ar d Nov e as t w Oct Sept Aug July June May AprilMarch
  • ar d Nov e as t w Oct Sept Aug July June May AprilMarch This forward and eastward drift
  • ar d Nov e as t w Oct Sept Aug July June May April MarchThis forward and eastward drift is called “prograde
  • ar d Nov e as t w Oct Sept Aug July June May April MarchThis forward and eastward drift is called “prograde
  • Nov Oct Sept Aug July June May April MarchThis forward and eastward drift is called “prograde
  • t i on mo Nov a de pr ogr Oct Sept Aug July June May April MarchThis forward and eastward drift is called “prograde
  • t i on mo Nov a de pr ogr Oct Sept Aug July June May AprilMarch
  • t i on mo Nov a de pr ogr Oct Sept Aug July June May AprilMarch …and prograde motion is caused
  • t i on mo Nov a de pr ogr Oct Sept Aug July June May April March…and prograde motion is caused by the planets’ orbits around the
  • Retrograde Motion
  • Nov Oct Sept Aug July June May AprilMarch
  • Nov Oct Sept Aug July June May AprilMarch If you watch a planet’s motion
  • Nov Oct Sept Aug July June May April MarchIf you watch a planet’s motion more closely, however,…
  • Nov Oct Sept Aug July June May AprilMarch
  • Nov Oct Sept Aug July June May AprilMarch …you’ll notice that the planet
  • Nov Oct Sept Aug July June May April March…you’ll notice that the planet does something interesting over time.
  • Nov Oct Sept Aug July June May AprilMarch
  • Nov Oct Sept Aug July June May AprilMarch After the planet moves forward
  • Nov Oct Sept Aug July June May April MarchAfter the planet moves forward in the eastward direction for a while,…
  • Nov Oct Sept Aug July June May April MarchAfter the planet moves forward in the eastward direction for a while,…
  • Nov Oct Sept Aug July June May April MarchAfter the planet moves forward in the eastward direction for a while,…
  • d t war eas Nov Oct Sept Aug July June May April MarchAfter the planet moves forward in the eastward direction for a while,…
  • d t war eas Nov Oct Sept Aug July June May AprilMarch
  • d t war eas Nov Oct Sept Aug July June May AprilMarch …it then stops,
  • d t war eas Nov Oct Sept Aug July June May AprilMarch …it then stops, backs up,
  • d t war eas Nov Oct Sept Aug July June May AprilMarch …it then stops, backs up, and goes westward for a while.
  • d t war eas Nov Oct Sept Aug July June May AprilMarch …it then stops, backs up, and goes westward for a while.
  • ard ard eastw westw Nov Oct Sept Aug July June May AprilMarch …it then stops, backs up, and goes westward for a while.
  • ard ard eastw westw Nov Oct Sept Aug July June May AprilMarch
  • ard ard eastw westw Nov Oct Sept Aug July June May AprilMarch But then it stops,
  • ard ard eastw westw Nov Oct Sept Aug July June May AprilMarch But then it stops, turns around,
  • ard ard eastw westw Nov Oct Sept Aug July June May April March But then it stops, turns around,and moves in the eastward direction again.
  • ard ard eastw westw Nov Oct Sept Aug July June May April March But then it stops, turns around,and moves in the eastward direction again.
  • ard ard ard tw stw eas we eastw Nov Oct Sept Aug July June May April March But then it stops, turns around,and moves in the eastward direction again.
  • ard ard ard tw stw eas we eastw Nov Oct Sept Aug July June May AprilMarch
  • ard ard ard tw stw eas we eastw Nov Oct Sept Aug July June May AprilMarchWhile the forward and eastward motion
  • ard ard ard tw stw eas we eastw Nov Oct Sept Aug July June May April MarchWhile the forward and eastward motion was called “prograde
  • ard ard ard tw stw eas we eastw Nov Oct Sept Aug July June May April MarchWhile the forward and eastward motion was called “prograde
  • ard westw Nov Oct Sept Aug July June May April MarchWhile the forward and eastward motion was called “prograde
  • otion rd otion m a a de stw em pr ogr we grad Nov pro Oct Sept Aug July June May April MarchWhile the forward and eastward motion was called “prograde
  • otion rd otion m a a de stw em pr ogr we grad Nov pro Oct Sept Aug July June May AprilMarch
  • otion rd otion m a a de stw em pr ogr we grad Nov pro Oct Sept Aug July June May AprilMarch…this backward and westward motion
  • otion rd otion m a a de stw em pr ogr we grad Nov pro Oct Sept Aug July June May AprilMarch…this backward and westward motion is called “retrograde
  • otion rd otion m a a de stw em pr ogr we grad Nov pro Oct Sept Aug July June May AprilMarch…this backward and westward motion is called “retrograde
  • tion tion e mo mo grad rad e pro pro g Nov Oct Sept Aug July June May AprilMarch…this backward and westward motion is called “retrograde
  • ot ion tion tion m mo o a de r ade em ogr rog rad pr ret pro g Nov Oct Sept Aug July June May AprilMarch…this backward and westward motion is called “retrograde
  • Now watch the planet Mars
  • Now watch the planet Mars as it demonstrates this motion.
  • As the planet moves eastward,
  • As the planet moves eastward, it demonstrates the prograde
  • prograde motionAs the planet moves eastward, it demonstrates the prograde
  • prograde motion MarchAs the planet moves eastward, it demonstrates the prograde
  • prograde motion AprilAs the planet moves eastward, it demonstrates the prograde
  • prograde motion MayAs the planet moves eastward, it demonstrates the prograde
  • prograde motion JuneAs the planet moves eastward, it demonstrates the prograde
  • prograde motion JulyAs the planet moves eastward, it demonstrates the prograde
  • prograde motion AugAs the planet moves eastward, it demonstrates the prograde
  • prograde motion AugAs the planet moves eastward, it demonstrates the prograde
  • prograde motion tion e mo grad pro AugAs the planet moves eastward, it demonstrates the prograde
  • tion e mo gradpro Aug
  • tion e mo grad pro AugBut then it stops,
  • tion e mo grad pro AugBut then it stops, turns around,
  • tion e mo grad pro Aug But then it stops, turns around,and shows westward retrograde motion.
  • retrograde motion tion e mo grad pro Aug But then it stops, turns around,and shows westward retrograde motion.
  • retrograde motion tion e mo grad pro Sept But then it stops, turns around,and shows westward retrograde motion.
  • retrograde motion tion e mo grad pro Oct But then it stops, turns around,and shows westward retrograde motion.
  • retrograde motion tion e mo grad pro Nov But then it stops, turns around,and shows westward retrograde motion.
  • retrograde motion tion e mo grad pro Nov But then it stops, turns around,and shows westward retrograde motion.
  • retrograde motion t ion tion mo e mo r ade rad prog retrog Nov But then it stops, turns around,and shows westward retrograde motion.
  • t ion tion mo e mo r ade radprog retrog Nov
  • t ion tion mo e mo r ade rad prog retrog NovAnd finally it stops,
  • t ion tion mo e mo r ade rad prog retrog NovAnd finally it stops, turns around again,
  • t ion tion mo e mo r ade rad prog retrog NovAnd finally it stops, turns around again,and shows the prograde motion again.
  • prograde motion t ion tion mo e mo r ade rad prog retrog Nov And finally it stops, turns around again, and shows the prograde motion again.
  • prograde motion t ion tion mo e mo r ade rad prog retrog Dec And finally it stops, turns around again, and shows the prograde motion again.
  • prograde motion t ion tion mo e mo r ade rad prog retrog Jan And finally it stops, turns around again, and shows the prograde motion again.
  • prograde motion t ion tion mo e mo r ade rad prog retrog Feb And finally it stops, turns around again, and shows the prograde motion again.
  • prograde motion t ion tion mo e mo r ade rad prog retrog March And finally it stops, turns around again, and shows the prograde motion again.
  • prograde motion t ion tion mo e mo r ade rad prog retrog April And finally it stops, turns around again, and shows the prograde motion again.
  • prograde motion t ion tion mo e mo r ade rad prog retrog May And finally it stops, turns around again, and shows the prograde motion again.
  • prograde motion t ion tion mo e mo r ade rad prog retrog May And finally it stops, turns around again, and shows the prograde motion again.
  • prograde motion ot ion tion tion m mo o a de r ade em ogr rog rad pr ret pro g May And finally it stops, turns around again, and shows the prograde motion again.
  • prograde motion ot ion tion tion m mo o a de r ade em ogr rog rad pr ret pro g May
  • prograde motion ot ion tion tion m mo o a de r ade em ogr rog rad pr ret pro g MayWhile it requires many months of observation,
  • prograde motion ot ion tion tion m mo o a de r ade em ogr rog rad pr ret pro g MayWhile it requires many months of observation, to witness the retrograde motion of Mars,
  • prograde motion ot ion tion tion m mo o a de r ade em ogr rog rad pr ret pro g May
  • prograde motion ot ion tion tion m mo o a de r ade em ogr rog rad pr ret pro g May …it was nevertheless a phenomenon
  • prograde motion ot ion tion tion m mo o a de r ade em ogr rog rad pr ret pro g May…it was nevertheless a phenomenon the ancients did not fail to notice.
  • The entire retrograde motion sequence
  • The entire retrograde motion sequence can be seen in this photo collage.
  • Can you explain why
  • Can you explain why this phenomenon is happening?
  • This slide shows an animation
  • This slide shows an animation of the retrograde
  • This slide shows an animation of the retrograde
  • Ptolemy Explains
  • Ptolemy ExplainsRetrograde Motion
  • The Geocentric Model
  • The Geocentric ModelIn the Geocentric Model
  • The Geocentric ModelIn the Geocentric Model of the Universe,…
  • The Geocentric Model
  • The Geocentric Model…Ptolemy had to explain this phenomenon
  • The Geocentric Model…Ptolemy had to explain this phenomenon of the retrograde motion of the planets.
  • The Geocentric Model
  • The Geocentric Model
  • The Geocentric ModelPtolemy explained that when Mars
  • The Geocentric ModelPtolemy explained that when Mars orbited the Earth,…
  • The Geocentric Model
  • The Geocentric Model …that it did so
  • The Geocentric Model…that it did so using (2) pivot arms.
  • The Geocentric Model…that it did so using (2) pivot arms.
  • The Geocentric Model…that it did so using (2) pivot arms.
  • The Geocentric Model…that it did so using (2) pivot arms.
  • The Geocentric Model
  • The Geocentric Model The larger of the (2) arms
  • The Geocentric ModelThe larger of the (2) arms makes a loop called a “deferent”,…
  • The Geocentric ModelThe larger of the (2) arms makes a loop called a “deferent”,…
  • The Geocentric ModelThe larger of the (2) arms makes a loop called a “deferent”,…
  • The Geocentric Model deferentThe larger of the (2) arms makes a loop called a “deferent”,…
  • The Geocentric Modeldeferent
  • The Geocentric Modeldeferent…while the smaller of the (2) arms
  • The Geocentric Model deferent…while the smaller of the (2) arms makes a loop called an “epicycle”.
  • The Geocentric Model deferent…while the smaller of the (2) arms makes a loop called an “epicycle”.
  • The Geocentric Model deferent…while the smaller of the (2) arms makes a loop called an “epicycle”.
  • The Geocentric Model epicycle deferent…while the smaller of the (2) arms makes a loop called an “epicycle”.
  • The Geocentric Model
  • The Geocentric Model When both of the pivot arms
  • The Geocentric ModelWhen both of the pivot arms are moving in circles,…
  • The Geocentric Model
  • The Geocentric Model…then the planet exhibits prograde motion
  • The Geocentric Model…then the planet exhibits prograde motion throughout most of its orbit.
  • The Geocentric Model
  • The Geocentric ModelBut sometimes, however,
  • The Geocentric ModelBut sometimes, however, Mars also appears to
  • The Geocentric Model
  • The Geocentric Model…and when this happens,
  • The Geocentric Model…and when this happens, the planet exhibits retorgrade
  • The Geocentric Model
  • The Geocentric Model Like this…
  • The Geocentric Model Like this…
  • The Geocentric Model
  • The Geocentric Model
  • The Geocentric Model
  • The Geocentric ModelWhile Ptolemy did not correctly explain
  • The Geocentric ModelWhile Ptolemy did not correctly explain the retrograde motion of
  • The Geocentric Model
  • The Geocentric Model …his explanation nevertheless sounded
  • The Geocentric Model …his explanation neverthelesssounded both credible and plausible.
  • The Geocentric Model
  • The Geocentric Model But Ptolemy’s explanation
  • The Geocentric ModelBut Ptolemy’s explanation for the retrograde motion of Mars,…
  • The Geocentric Model
  • The Geocentric Model …did not alone prove
  • The Geocentric Model…did not alone prove that the Geocentric Model was correct.
  • The Geocentric Model
  • The Geocentric Model The ancients also offered
  • The Geocentric ModelThe ancients also offered (4) other arguments,…
  • The Geocentric Model
  • The Geocentric Model…in defense of the Earth’s position
  • The Geocentric Model…in defense of the Earth’s position at the center of the Universe.
  • 4 Arguments for the
  • 4 Arguments for the Geocentric Model
  • 1) We Can’t Detect Earth’s Motion
  • 1) We Can’t Detect Earth’s MotionThe first argument given,
  • 1) We Can’t Detect Earth’s MotionThe first argument given, to support the Geocentric Model,…
  • 1) We Can’t Detect Earth’s Motion
  • 1) We Can’t Detect Earth’s Motion…was that if the Earth revolved the Sun,
  • 1) We Can’t Detect Earth’s Motion…was that if the Earth revolved the Sun, then we would feel the Earth’s motion.
  • 1) We Can’t Detect Earth’s Motion
  • 1) We Can’t Detect Earth’s MotionBut since the Earth’s motion,
  • 1) We Can’t Detect Earth’s MotionBut since the Earth’s motion, could not be detected,…
  • 1) We Can’t Detect Earth’s Motion
  • 1) We Can’t Detect Earth’s Motion…then the Earth, they thought,
  • 1) We Can’t Detect Earth’s Motion…then the Earth, they thought, could not possibly be moving.
  • 1) We Can’t Detect Earth’s Motion
  • 1) We Can’t Detect Earth’s Motion But there are actually (5) ways
  • 1) We Can’t Detect Earth’s MotionBut there are actually (5) ways in which the Earth does in fact move.
  • 1) We Can’t Detect Earth’s Motion
  • 1) We Can’t Detect Earth’s Motion
  • 1) We Can’t Detect Earth’s Motion 1)
  • 1) We Can’t Detect Earth’s Motion 1) The Earth is rotating
  • 1) We Can’t Detect Earth’s Motion 1) The Earth is rotating on its imaginary axis.
  • 1) We Can’t Detect Earth’s Motion
  • 1) We Can’t Detect Earth’s Motion
  • 1) We Can’t Detect Earth’s Motion 2)
  • 1) We Can’t Detect Earth’s Motion 2) The Earth is revolving
  • 1) We Can’t Detect Earth’s Motion 2) The Earth is revolving around the Sun.
  • 1) We Can’t Detect Earth’s Motion
  • 1) We Can’t Detect Earth’s Motion
  • 1) We Can’t Detect Earth’s Motion 3)
  • 1) We Can’t Detect Earth’s Motion 3) The Earth is “precessing”,
  • 1) We Can’t Detect Earth’s Motion 3) The Earth is “precessing”, or wobbling, on its axis.
  • 1) We Can’t Detect Earth’s Motion
  • 1) We Can’t Detect Earth’s Motion
  • 1) We Can’t Detect Earth’s Motion 4)
  • 1) We Can’t Detect Earth’s Motion 4) The Sun is revolving
  • 1) We Can’t Detect Earth’s Motion 4) The Sun is around the center of the Milky Way. revolving
  • 1) We Can’t Detect Earth’s Motion 4) The Sun is around the center of the Milky Way. revolving
  • 1) We Can’t Detect Earth’s Motion 4) The Sun is around the center of the Milky Way. revolving
  • 1) We Can’t Detect Earth’s Motion 4) The Sun is around the center of the Milky Way. revolving
  • 1) We Can’t Detect Earth’s Motion 4) The Sun is around the center of the Milky Way. revolving
  • 1) We Can’t Detect Earth’s Motion 4) The Sun is around the center of the Milky Way. revolving
  • 1) We Can’t Detect Earth’s Motion 4) The Sun is around the center of the Milky Way. revolving
  • 1) We Can’t Detect Earth’s Motion 4) The Sun is around the center of the Milky Way. revolving
  • 1) We Can’t Detect Earth’s Motion 4) The Sun is around the center of the Milky Way. revolving
  • 1) We Can’t Detect Earth’s Motion
  • 1) We Can’t Detect Earth’s Motion
  • 1) We Can’t Detect Earth’s Motion 5)
  • 1) We Can’t Detect Earth’s Motion 5) The galaxies are moving apart,
  • 1) We Can’t Detect Earth’s Motion 5) The galaxies are moving apart, as a result of the Big Bang.
  • 1) We Can’t Detect Earth’s Motion 5) The galaxies are moving apart, as a result of the Big Bang.
  • 1) We Can’t Detect Earth’s Motion 5) The galaxies are moving apart, as a result of the Big Bang.
  • 1) We Can’t Detect Earth’s Motion separating 5) The galaxies are moving apart, as a result of the Big Bang.
  • 1) We Can’t Detect Earth’s Motion
  • 1) We Can’t Detect Earth’s Motion
  • 1) We Can’t Detect Earth’s Motion
  • 1) We Can’t Detect Earth’s Motion
  • 1) We Can’t Detect Earth’s Motion
  • 1) We Can’t Detect Earth’s Motion separating
  • 1) We Can’t Detect Earth’s Motion separating But none of these motions
  • 1) We Can’t Detect Earth’s Motion separatingBut none of these motions could be felt by the ancients.
  • 1) We Can’t Detect Earth’s Motion separating
  • 1) We Can’t Detect Earth’s Motion separating And since none of these motions
  • 1) We Can’t Detect Earth’s Motion separatingAnd since none of these motions were detectable,…
  • 1) We Can’t Detect Earth’s Motion separating
  • 1) We Can’t Detect Earth’s Motion separating…then the ancients incorrectly concluded
  • 1) We Can’t Detect Earth’s Motion separating…then the ancients incorrectly concluded that the Earth could not
  • 1) We Can’t Detect Earth’s Motion separating…then the ancients incorrectly concluded that the Earth could not
  • 1) We Can’t Detect Earth’s Motion separating…then the ancients incorrectly concluded that the Earth could not
  • 1) We Can’t Detect Earth’s Motion separating
  • 1) We Can’t Detect Earth’s Motion separating Of course, the real reason
  • 1) We Can’t Detect Earth’s Motion separatingOf course, the real reason why the Earth’s motion was not
  • 1) We Can’t Detect Earth’s Motion separating
  • 1) We Can’t Detect Earth’s Motion separating …is because motion is relative
  • 1) We Can’t Detect Earth’s Motion separating…is because motion is relative and cannot be detected.
  • 1) We Can’t Detect Earth’s Motion separating
  • 1) We Can’t Detect Earth’s Motion separatingBut until Albert Einstein came along,
  • 1) We Can’t Detect Earth’s Motion separatingBut until Albert Einstein came along, 19 centuries later,…
  • 1) We Can’t Detect Earth’s Motion separating
  • 1) We Can’t Detect Earth’s Motion separating …the dynamics of relative motion
  • 1) We Can’t Detect Earth’s Motion separating…the dynamics of relative motion would not be fully understood.
  • 1) We Can’t Detect Earth’s Motion separating…the dynamics of relative motion would not be fully understood.
  • 2) We Don’t Observe Stellar Parallax
  • 2) We Don’t Observe Stellar Parallax A second argument given
  • 2) We Don’t Observe Stellar ParallaxA second argument given in support of the Geocentric Model,
  • 2) We Don’t Observe Stellar Parallax
  • 2) We Don’t Observe Stellar Parallax …had to do with the failure of the ancients
  • 2) We Don’t Observe Stellar Parallax…had to do with the failure of the ancients to observe parallax among the stars.
  • 2) We Don’t Observe Stellar Parallax
  • 2) We Don’t Observe Stellar ParallaxIf the Earth were truly in motion,
  • 2) We Don’t Observe Stellar ParallaxIf the Earth were truly in motion, the thinking went,…
  • 2) We Don’t Observe Stellar Parallax
  • 2) We Don’t Observe Stellar Parallax…then a star would appear to shift positions
  • 2) We Don’t Observe Stellar Parallax…then a star would appear to shift positions as the Earth orbited the Sun.
  • 2) We Don’t Observe Stellar Parallax
  • 2) We Don’t Observe Stellar ParallaxA star would appear in one position,
  • 2) We Don’t Observe Stellar ParallaxA star would appear in one position, in June for example,…
  • 2) We Don’t Observe Stellar ParallaxA star would appear in one position, in June for example,…
  • 2) We Don’t Observe Stellar ParallaxA star would appear in one position, in June for example,…
  • 2) We Don’t Observe Stellar Parallax JuneA star would appear in one position, in June for example,…
  • 2) We Don’t Observe Stellar Parallax JuneA star would appear in one position, in June for example,…
  • 2) We Don’t Observe Stellar Parallax JuneA star would appear in one position, in June for example,…
  • 2) We Don’t Observe Stellar Parallax JuneA star would appear in one position, in June for example,…
  • 2) We Don’t Observe Stellar Parallax June
  • 2) We Don’t Observe Stellar Parallax June …and then appear in different position
  • 2) We Don’t Observe Stellar Parallax June …and then appear in different position (6) months later.
  • 2) We Don’t Observe Stellar Parallax June …and then appear in different position (6) months later.
  • 2) We Don’t Observe Stellar Parallax June …and then appear in different position (6) months later.
  • 2) We Don’t Observe Stellar Parallax June December …and then appear in different position (6) months later.
  • 2) We Don’t Observe Stellar Parallax June December …and then appear in different position (6) months later.
  • 2) We Don’t Observe Stellar Parallax June December …and then appear in different position (6) months later.
  • 2) We Don’t Observe Stellar Parallax June December …and then appear in different position (6) months later.
  • 2) We Don’t Observe Stellar Parallax June December
  • 2) We Don’t Observe Stellar Parallax June December And as the Earth
  • 2) We Don’t Observe Stellar Parallax June DecemberAnd as the Earth revolved around the Sun,…
  • 2) We Don’t Observe Stellar Parallax June December
  • 2) We Don’t Observe Stellar Parallax June December…the star would then seem to demonstrate
  • 2) We Don’t Observe Stellar Parallax June December…the star would then seem to demonstrate a certain amount of parallactic shift.
  • 2) We Don’t Observe Stellar Parallax June December…the star would then seem to demonstrate a certain amount of parallactic shift.
  • 2) We Don’t Observe Stellar Parallax June December…the star would then seem to demonstrate a certain amount of parallactic shift.
  • 2) We Don’t Observe Stellar Parallax June December…the star would then seem to demonstrate a certain amount of parallactic shift.
  • 2) We Don’t Observe Stellar Parallax June December…the star would then seem to demonstrate a certain amount of parallactic shift.
  • 2) We Don’t Observe Stellar Parallax June December…the star would then seem to demonstrate a certain amount of parallactic shift.
  • 2) We Don’t Observe Stellar Parallax June December…the star would then seem to demonstrate a certain amount of parallactic shift.
  • 2) We Don’t Observe Stellar Parallax June December…the star would then seem to demonstrate a certain amount of parallactic shift.
  • 2) We Don’t Observe Stellar Parallax parallactic shift June December…the star would then seem to demonstrate a certain amount of parallactic shift.
  • 2) We Don’t Observe Stellar Parallax parallactic shift June December
  • 2) We Don’t Observe Stellar Parallax parallactic shift June December But since stellar parallax
  • 2) We Don’t Observe Stellar Parallax parallactic shift June DecemberBut since stellar parallax was not observed by the ancients,
  • 2) We Don’t Observe Stellar Parallax parallactic shift June December
  • 2) We Don’t Observe Stellar Parallax parallactic shift June December …then they thought that the Earth
  • 2) We Don’t Observe Stellar Parallax parallactic shift June December…then they thought that the Earth could not possibly be revolving the Sun.
  • 2) We Don’t Observe Stellar Parallax parallactic shift June December…then they thought that the Earth could not possibly be revolving the Sun.
  • 2) We Don’t Observe Stellar Parallax parallactic shift June December…then they thought that the Earth could not possibly be revolving the Sun.
  • 2) We Don’t Observe Stellar Parallax parallactic shift June December
  • 2) We Don’t Observe Stellar Parallax parallactic shift June December Of course, the real reason
  • 2) We Don’t Observe Stellar Parallax parallactic shift June DecemberOf course, the real reason why the ancients never observed
  • 2) We Don’t Observe Stellar Parallax parallactic shift June December
  • 2) We Don’t Observe Stellar Parallax parallactic shift June December …is because stars are too far away
  • 2) We Don’t Observe Stellar Parallax parallactic shift June December…is because stars are too far away to observe parallax with the naked eye.
  • 2) We Don’t Observe Stellar Parallax parallactic shift June December…is because stars are too far away to observe parallax with the naked eye.
  • Heliocentric Model
  • 3) The Moon Could Not Keep Up Heliocentric Model
  • 3) The Moon Could Not Keep Up Heliocentric Model The third argument given
  • 3) The Moon Could Not Keep Up Heliocentric ModelThe third argument given in support of the Geocentric Model,
  • 3) The Moon Could Not Keep Up Heliocentric Model
  • 3) The Moon Could Not Keep Up Heliocentric Model…was that if the Earth orbited the Sun,
  • 3) The Moon Could Not Keep Up Heliocentric Model…was that if the Earth orbited the Sun, that the Moon would lag behind.
  • 3) The Moon Could Not Keep Up Heliocentric Model
  • 3) The Moon Could Not Keep Up Heliocentric Model Since there is no tether
  • 3) The Moon Could Not Keep Up Heliocentric ModelSince there is no tether to pull the Moon along,…
  • 3) The Moon Could Not Keep Up Heliocentric Model
  • 3) The Moon Could Not Keep Up Heliocentric Model …then the Moon would be unable
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon would be unable to keep up with the Earth’s motion.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon would be unable to keep up with the Earth’s motion.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon would be unable to keep up with the Earth’s motion.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon would be unable to keep up with the Earth’s motion.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon would be unable to keep up with the Earth’s motion.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon would be unable to keep up with the Earth’s motion.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon would be unable to keep up with the Earth’s motion.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon would be unable to keep up with the Earth’s motion.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon would be unable to keep up with the Earth’s motion.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon would be unable to keep up with the Earth’s motion.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon would be unable to keep up with the Earth’s motion.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon would be unable to keep up with the Earth’s motion.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon would be unable to keep up with the Earth’s motion.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon would be unable to keep up with the Earth’s motion.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon would be unable to keep up with the Earth’s motion.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon would be unable to keep up with the Earth’s motion.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon would be unable to keep up with the Earth’s motion.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon would be unable to keep up with the Earth’s motion.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon would be unable to keep up with the Earth’s motion.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon would be unable to keep up with the Earth’s motion.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon would be unable to keep up with the Earth’s motion.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon would be unable to keep up with the Earth’s motion.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon would be unable to keep up with the Earth’s motion.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon would be unable to keep up with the Earth’s motion.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon would be unable to keep up with the Earth’s motion.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon would be unable to keep up with the Earth’s motion.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon would be unable to keep up with the Earth’s motion.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon would be unable to keep up with the Earth’s motion.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon would be unable to keep up with the Earth’s motion.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon would be unable to keep up with the Earth’s motion.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon would be unable to keep up with the Earth’s motion.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon would be unable to keep up with the Earth’s motion.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon would be unable to keep up with the Earth’s motion.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon would be unable to keep up with the Earth’s motion.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon would be unable to keep up with the Earth’s motion.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon would be unable to keep up with the Earth’s motion.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon would be unable to keep up with the Earth’s motion.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon would be unable to keep up with the Earth’s motion.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon would be unable to keep up with the Earth’s motion.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon would be unable to keep up with the Earth’s motion.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon would be unable to keep up with the Earth’s motion.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon would be unable to keep up with the Earth’s motion.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon would be unable to keep up with the Earth’s motion.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon would be unable to keep up with the Earth’s motion.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon would be unable to keep up with the Earth’s motion.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon would be unable to keep up with the Earth’s motion.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon would be unable to keep up with the Earth’s motion.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon would be unable to keep up with the Earth’s motion.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon would be unable to keep up with the Earth’s motion.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon would be unable to keep up with the Earth’s motion.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon would be unable to keep up with the Earth’s motion.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon would be unable to keep up with the Earth’s motion.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon would be unable to keep up with the Earth’s motion.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon would be unable to keep up with the Earth’s motion.
  • 3) The Moon Could Not Keep Up Heliocentric Model
  • 3) The Moon Could Not Keep Up Heliocentric ModelThe flaw in the ancients’ thinking,
  • 3) The Moon Could Not Keep Up Heliocentric ModelThe flaw in the ancients’ thinking, however,…
  • 3) The Moon Could Not Keep Up Heliocentric Model
  • 3) The Moon Could Not Keep Up Heliocentric Model…lay in the their failure to properly understand
  • 3) The Moon Could Not Keep Up Heliocentric Model…lay in the their failure to properly understand Newton’s first law of motion.
  • 3) The Moon Could Not Keep Up Heliocentric Model
  • 3) The Moon Could Not Keep Up Heliocentric Model All objects move through space
  • 3) The Moon Could Not Keep Up Heliocentric ModelAll objects move through space because they have inertia.
  • 3) The Moon Could Not Keep Up Heliocentric Model
  • 3) The Moon Could Not Keep Up Heliocentric Model And since the Moon and the Earth
  • 3) The Moon Could Not Keep Up Heliocentric ModelAnd since the Moon and the Earth were already in motion together,…
  • 3) The Moon Could Not Keep Up Heliocentric Model
  • 3) The Moon Could Not Keep Up Heliocentric Model …then the Moon has no problem at all
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon has no problem at all keeping up with the moving Earth.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon has no problem at all keeping up with the moving Earth.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon has no problem at all keeping up with the moving Earth.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon has no problem at all keeping up with the moving Earth.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon has no problem at all keeping up with the moving Earth.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon has no problem at all keeping up with the moving Earth.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon has no problem at all keeping up with the moving Earth.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon has no problem at all keeping up with the moving Earth.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon has no problem at all keeping up with the moving Earth.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon has no problem at all keeping up with the moving Earth.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon has no problem at all keeping up with the moving Earth.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon has no problem at all keeping up with the moving Earth.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon has no problem at all keeping up with the moving Earth.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon has no problem at all keeping up with the moving Earth.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon has no problem at all keeping up with the moving Earth.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon has no problem at all keeping up with the moving Earth.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon has no problem at all keeping up with the moving Earth.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon has no problem at all keeping up with the moving Earth.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon has no problem at all keeping up with the moving Earth.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon has no problem at all keeping up with the moving Earth.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon has no problem at all keeping up with the moving Earth.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon has no problem at all keeping up with the moving Earth.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon has no problem at all keeping up with the moving Earth.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon has no problem at all keeping up with the moving Earth.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon has no problem at all keeping up with the moving Earth.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon has no problem at all keeping up with the moving Earth.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon has no problem at all keeping up with the moving Earth.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon has no problem at all keeping up with the moving Earth.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon has no problem at all keeping up with the moving Earth.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon has no problem at all keeping up with the moving Earth.
  • 3) The Moon Could Not Keep Up Heliocentric Model…then the Moon has no problem at all keeping up with the moving Earth.
  • 3) The Moon Could Not Keep Up Heliocentric Model
  • 3) The Moon Could Not Keep Up Heliocentric Model But since the ancients
  • 3) The Moon Could Not Keep Up Heliocentric ModelBut since the ancients knew nothing at all about inertia,…
  • 3) The Moon Could Not Keep Up Heliocentric Model
  • 3) The Moon Could Not Keep Up Heliocentric Model …then they incorrectly believed
  • 3) The Moon Could Not Keep Up Heliocentric Model…then they incorrectly believed that the Earth could not possibly be in
  • 3) The Moon Could Not Keep Up Heliocentric Model…then they incorrectly believed that the Earth could not possibly be in
  • 3) The Moon Could Not Keep Up Heliocentric Model…then they incorrectly believed that the Earth could not possibly be in
  • 3) The Moon Could Not Keep Up Heliocentric Model
  • 3) The Moon Could Not Keep Up Heliocentric ModelThey therefore incorrectly concluded,
  • 3) The Moon Could Not Keep Up Heliocentric ModelThey therefore incorrectly concluded, that the Earth must remain
  • 3) The Moon Could Not Keep Up Heliocentric Model
  • 3) The Moon Could Not Keep Up Heliocentric Model …and that the Geocentric Model
  • 3) The Moon Could Not Keep Up Heliocentric Model…and that the Geocentric Model must be correct.
  • 3) The Moon Could Not Keep Up Heliocentric Model…and that the Geocentric Model must be correct.
  • 4) Objects Would Fly Off Earth
  • 4) Objects Would Fly Off Earth The fourth argument given
  • 4) Objects Would Fly Off EarthThe fourth argument given in support of the Geocentric
  • 4) Objects Would Fly Off Earth
  • 4) Objects Would Fly Off Earth …had to do with the Earth’s rotation
  • 4) Objects Would Fly Off Earth…had to do with the Earth’s rotation on its axis.
  • 4) Objects Would Fly Off Earth
  • 4) Objects Would Fly Off EarthIf the Earth were to rotate on its axis,
  • 4) Objects Would Fly Off EarthIf the Earth were to rotate on its axis, the ancients believed,…
  • 4) Objects Would Fly Off Earth
  • 4) Objects Would Fly Off Earth …then anything not nailed down
  • 4) Objects Would Fly Off Earth…then anything not nailed down would fly off into space.
  • 4) Objects Would Fly Off Earth…then anything not nailed down would fly off into space.
  • 4) Objects Would Fly Off Earth…then anything not nailed down would fly off into space.
  • 4) Objects Would Fly Off Earth…then anything not nailed down would fly off into space.
  • 4) Objects Would Fly Off Earth…then anything not nailed down would fly off into space.
  • 4) Objects Would Fly Off Earth…then anything not nailed down would fly off into space.
  • 4) Objects Would Fly Off Earth…then anything not nailed down would fly off into space.
  • 4) Objects Would Fly Off Earth…then anything not nailed down would fly off into space.
  • 4) Objects Would Fly Off Earth…then anything not nailed down would fly off into space.
  • 4) Objects Would Fly Off Earth…then anything not nailed down would fly off into space.
  • 4) Objects Would Fly Off Earth…then anything not nailed down would fly off into space.
  • 4) Objects Would Fly Off Earth…then anything not nailed down would fly off into space.
  • 4) Objects Would Fly Off Earth…then anything not nailed down would fly off into space.
  • 4) Objects Would Fly Off Earth…then anything not nailed down would fly off into space.
  • 4) Objects Would Fly Off Earth…then anything not nailed down would fly off into space.
  • 4) Objects Would Fly Off Earth…then anything not nailed down would fly off into space.
  • 4) Objects Would Fly Off Earth…then anything not nailed down would fly off into space.
  • 4) Objects Would Fly Off Earth…then anything not nailed down would fly off into space.
  • 4) Objects Would Fly Off Earth…then anything not nailed down would fly off into space.
  • 4) Objects Would Fly Off Earth
  • 4) Objects Would Fly Off Earth Since the ancients failed to observe
  • 4) Objects Would Fly Off EarthSince the ancients failed to observe objects flying off into space,…
  • 4) Objects Would Fly Off Earth
  • 4) Objects Would Fly Off Earth …then they incorrectly concluded
  • 4) Objects Would Fly Off Earth…then they incorrectly concluded that the Earth must not be rotating.
  • 4) Objects Would Fly Off Earth…then they incorrectly concluded that the Earth must not be rotating.
  • 4) Objects Would Fly Off Earth…then they incorrectly concluded that the Earth must not be rotating.
  • 4) Objects Would Fly Off Earth
  • 4) Objects Would Fly Off Earth Of course, the real reason
  • 4) Objects Would Fly Off EarthOf course, the real reason why objects do not fly off into space,…
  • 4) Objects Would Fly Off Earth
  • 4) Objects Would Fly Off Earth …is because the Earth
  • 4) Objects Would Fly Off Earth…is because the Earth is not spinning fast enough.
  • 4) Objects Would Fly Off Earth
  • 4) Objects Would Fly Off Earth If the Earth were to spin
  • 4) Objects Would Fly Off EarthIf the Earth were to spin 17x as fast as it currently spins,…
  • 4) Objects Would Fly Off Earth
  • 4) Objects Would Fly Off Earth …then everything not nailed down
  • 4) Objects Would Fly Off Earth…then everything not nailed down would suddenly go airborne.
  • 4) Objects Would Fly Off Earth…then everything not nailed down would suddenly go airborne.
  • The Geocentric Model
  • The Geocentric Model Since none of these questions
  • The Geocentric ModelSince none of these questions could be answered,…
  • The Geocentric Model
  • The Geocentric Model…then Ptolemy and the Geocentric Model
  • The Geocentric Model…then Ptolemy and the Geocentric Modelremained unchallenged for 14 centuries.
  • End of Part 1
  • A Note from the Author~ If you liked my presentation, please email me atAstronomyTeacehr@aol.com and tell me why you liked it. Ihave made a powerpoint as thorough as this one for eachAstronomy subject. I placed this one online just to see if it isgetting any response and usage. I am an Astronomy teacher in northern Virginia, age 50. I havetaught Astronomy to the students of northern VA for 24 years.TomMarch 24, 2012