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Retrograde Motion. https://youtu.be/72FrZz_zJFU. Epicycles. Introduced to explain retrograde (westward) motion of planets. The Ptolemaic system was considered the “standard model” of the Universe until the Copernican Revolution.
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Retrograde Motion https://youtu.be/72FrZz_zJFU
Epicycles Introduced to explain retrograde (westward) motion of planets The Ptolemaic system was considered the “standard model” of the Universe until the Copernican Revolution.
Ptolemy explained this motion using a geocentric (Earth-centered) model of the solar system in which the planets orbited the Earth indirectly, by moving on epicycles which in turn orbited the Earth.
Retrograde motion (Copernicus) http://www.lasalle.edu/~smithsc/Astronomy/retrograd.html
Retrograde motion (Copernicus) http://www.lasalle.edu/~smithsc/Astronomy/retrograd.html
Retrograde motion (Copernicus) http://www.lasalle.edu/~smithsc/Astronomy/retrograd.html
Retrograde motion (Copernicus) http://www.lasalle.edu/~smithsc/Astronomy/retrograd.html
Retrograde motion (Copernicus) http://www.lasalle.edu/~smithsc/Astronomy/retrograd.html
Retrograde motion (Copernicus) http://www.lasalle.edu/~smithsc/Astronomy/retrograd.html
Retrograde motion (Copernicus) http://www.lasalle.edu/~smithsc/Astronomy/retrograd.html
Retrograde motion (Copernicus) http://www.lasalle.edu/~smithsc/Astronomy/retrograd.html
Retrograde motion (Copernicus) http://www.lasalle.edu/~smithsc/Astronomy/retrograd.html
Retrograde motion (Copernicus) http://www.lasalle.edu/~smithsc/Astronomy/retrograd.html
Retrograde motion (Copernicus) http://www.lasalle.edu/~smithsc/Astronomy/retrograd.html
Retrograde motion (Copernicus) http://www.lasalle.edu/~smithsc/Astronomy/retrograd.html
Retrograde motion (Copernicus) http://www.lasalle.edu/~smithsc/Astronomy/retrograd.html
Retrograde motion (Copernicus) http://www.lasalle.edu/~smithsc/Astronomy/retrograd.html
Retrograde motion (Copernicus) http://www.lasalle.edu/~smithsc/Astronomy/retrograd.html
Retrograde motion (Copernicus) http://www.lasalle.edu/~smithsc/Astronomy/retrograd.html
Retrograde motion (Copernicus) http://www.lasalle.edu/~smithsc/Astronomy/retrograd.html