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http://mitpress.mit.edu/journals/pdf/POSC_13_1_74_0.pdf
The 'Panus Quadregesimalis' on page 86 is the second greatest astronomical representation after the Copernican heliocentric arrangement but causes all sorts of difficulties and misjudgements even though Kepler explains that it represents the orbital motion of Mars against the orbital motion of the Earth (bottom page 84) in terms of orbital periods. While the authors of that website assume,as most do through habit ,that the representation reflects the motions of Mars from a stationary Earth ,the variations in spacings between the loops and the size of the retrograde loops themselves reflect an accurate description of the orbital motion of the Earth overtaking the orbital motion of Mars.Had the orbits been circular and uniform the spacings and the loops would be of equal dimensions however the variations in spacings denote Keplerian motion and geometry. Planetary motions were always considered direct by both Ptolemaics and heliocentrists even though both retained the stellar background for plotting the motions (hence retrogrades) however Newton retained the stellar background and simply transferred the plotted motions including retrogrades to a heliocentric arrangement Newton basically took the representation of page 86 as geocentric and transfered it directly to a heliocentric arrangement and Keplerian geometry,hence the concept which is neither Copernican nor Ptolemaic - "For to the earth planetary motions appear sometimes direct, sometimes stationary, nay, and sometimes retrograde. But from the sun they are always seen direct.." http://members.tripod.com/~gravitee/phaenomena.htm Kepler would have operated on the principle that planetary motions are always seen direct from the orbital motion of the Earth and all observation suggests it - http://antwrp.gsfc.nasa.gov/apod/ima...2000_tezel.gif The point of departure for a much needed astronomical audit is matching the plotting of planetary motion of Mars to the Panus quadragesimalis as being partly geocentric in terms of the plotting against the stellar background and partly heliocentric in accurately reflecting where Earth and Mars meet and move apart thus generating unequal looping and spacing . For the first time genuine investigators can approach the Newtonian Scholium IV (it is not really neccessary) and make sense of relative and absolute space as a misjudgement creating a concept that is neither geocentric nor heliocentric but quasi-geocentric and closer to astrology in nature than it is to Ptolemaic astronomy. http://members.tripod.com/~gravitee/...tions.htm#time The build up of astronomical data and its relevence to not just astronomy but also geology,climatology and many seemingly unrelated disciplines require a more accurate reflection of the Earth's motions and orientations,without a complete audit of astronomical conceptions,warts and all,genuinely productive avenues will remain blocked off and association between different disciplines will wither. It is not a matter of right and wrong but of intuitive atrophy ,noting that there are no conditions by which it can be adjudged whether a person has the neccessary qualities to assess the astronomical material,unfortunately the broad consensual exotic conceptions that now exist suggests that the intutive astronomical faculties remain undeveloped or almost non-existent. Have a productive New Year. |
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