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Two-thousand and nine (2009) was the 400th anniversary of the
publication of Johannes Kepler’s book New Astronomy (Astronomia Nova) announcing the discovery of the elliptical orbit of Mars to the world. The discovery of the elliptical orbit of Mars and the mathematical rule of motion for Mars on its elliptical orbit by Johannes Kepler in 1605 is one of the most important advances in astronomy, physics, and science. This discovery transformed the unproven heliocentric theory of Copernicus into a rigorous predictive theory that outperformed the traditional geocentric theory of Claudius Ptolemy and his successors. The discovery paved the way for Newton’s theory of gravitation. It remains one of a small number of cases where a simple mathematical rule for seemingly complex and confusing data has been found. In many respects, the discovery of the elliptical orbit of Mars and other planets is more important than the better known work of Kepler’s contemporary Galileo. In honor of Kepler, NASA has named its recent mission to look for extra-solar planets, especially possible other Earths that might support life or even intelligence, the Kepler mission. In Kepler’s time the reigning Ptolemaic theory could predict the position of Mars to within a few degrees, usually less than a one percent error. How important is such a small error? Space missions routinely depend on modern orbital dynamics, a lineal descendant of Kepler’s work, to make far more accurate calculations to succeed. The Mars Climate Orbiter mission in 1999 failed due to a tiny error. After traveling about 300 million miles, the Mars Climate Orbiter came in about 90 miles, a tiny fraction of 300 million miles, too low, burning up in the Martian atmosphere rather than aerobreaking successfully into orbit. Successful space missions, the Global Positioning System (GPS), and other modern applications depend on precision mathematical models similar to and sometimes directly descended from Kepler’s model of the orbit of Mars. Kepler’s story is very different from the story of Galileo and it offers different lessons for today. Diverse fields ranging from astronomy and space physics to artificial intelligence are confronted with similarly complex and confusing data. A mathematical solution to an outstanding problem comparable to Kepler’s discovery could reveal long suspected connections between gravity and other forces, perhaps enabling new power or propulsion systems, enable computers to recognize objects and spoken words, or solve other problems. This article will discuss the discovery of the elliptical orbit of Mars in the context of Kepler’s time. It will also draw some lessons from Kepler and compare and contrast Kepler’s process of discovery to modern astronomy, physics, space science and engineering, including a detailed discussion of dark matter and dark energy. http://math-blog.com/2009/12/17/keplers-new-astronomy/ |
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On Jan 30, 11:19*pm, John wrote:
This discovery transformed the unproven heliocentric theory of Copernicus into a rigorous predictive theory that outperformed the traditional geocentric theory of Claudius Ptolemy and his successors. The discovery paved the way for Newton’s theory of gravitation. It remains one of a small number of cases where a simple mathematical rule for seemingly complex and confusing data has been found. How long some people can get away with this empirical propaganda is anyone's guess but far from confusing and complex ,the insight of Kepler in respect to orbital geometry can now be understood by almost any adult with an interest in the astronomy of planetary dynamics and how the solution was arrived at using apparent retrogrades and the background stars as a gauge for the variation in orbital speeds of planets. It takes little effort to match Kepler's observation of Mars as seen from an orbitally moving Earth with modern time lapse footage of the Earth overtaking Jupiter and Saturn once the viewer comprehends the basic insight behind the Earth's orbital dynamic first proposed by Copernicus - http://en.wikipedia.org/wiki/File:Ke...retrograde.jpg http://apod.nasa.gov/apod/ap011220.html Like all astronomers since antiquity who followed the apparent stoppings and retrogradations of planets,the periods and the degree of retrogradations are never alike as reflected in Kepler's representation,Ptolemy came up with the equant as a solution,Copernicus with the epicycle whereas Kepler came up with the variable orbital speed and non circular orbital geometry for this refinement to the insight of Copernicus. The elaborate scheme of Newton to use the Ra/Dec framework as a common denominator between observation and prediction/modelling eschews the original interpretation for orbital dynamics which uses orbital comparisons - "PHÆNOMENON IV. That the fixed stars being at rest, the periodic times of the five primary planets, and (whether of the sun about the earth, or) of the earth about the sun, are in the sesquiplicate proportion of their mean distances from the sun." Newton What you call "complex and confusing data" is actually distorted and crude interpretation of the great astronomical works,in an era where it is even possible to see planetary orbital geometries in action by way of the Fomalhaut system,people are stuck in a celestial sphere Ra/ Dec framework which originated with Flamsteed and was built on by Newton. There are now multiple ways to extract variable orbital speeds from direct observation,such as the fortuitous daily rotational and orbital characteristics of Uranus or by inference such as the difference between natural noon and 24 hour noon as expressed by constant daily rotation ,all these can be worked on and explained by the orbital characteristics of our planet and any other planet. It is time for a new astronomy which 21st century imaging allows but that takes astronomers to realize that endeavor and not followers of Ra/Dec geometry |
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What you call "complex and confusing data" is actually distorted and
crude interpretation of the great astronomical works,in an era where it is even possible to see planetary orbital geometries in action by way of the Fomalhaut system,people are stuck in a celestial sphere Ra/ Dec framework *which originated with Flamsteed and was built on by Newton. Youre a pompous ass. a real jackass if not a butthole spraying out to dirty a porcelain toilet. The man is wiser than you because he recognizes that simple things are complex and confusing to others. WTF is wrong with seeing that; it means he humbles his mind and you don't. Any teacher can see that math and algebra and geometry and astronomy can be confusing to some of the students, YES many of the students. And you act like just anyone can see it. You are so arrogant for what you think you know while you ignore what little you know by acknowledging things you don't know. Come down off your horse. I understood what he meant and he is right. Who are you to take away the opinion that circular orbits force a confusion if the real objects are not circular but elliptical. It is such a disgrace that you people do nothing but shred each other with names and the atitude that others are stupid. You slam him for saying how the math is confusing to lesser individuals and so in essence you claim those people are not stupid nor confused but rather he is stupid and confused for not thinking like you that it is all so simple for everyone else who is even less educated than he is. Your post has nothing to do with astronomic knowledge, it is clearly posted only to make this guy look stupid for what he NEVER said the way you wish to claim he meant it. Hey JOHN with the real name..... just print it out and roll it up so pseudo-oriel can stick it where the sun dont shine. ****ed off at the likes of him. They killed Jesus too. |
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the likes of you shouldn't be quoting wikipedia.
Wikipedia says nothing about Sirius being 1460 years of a 365-day calendar from July 20 of 139 AD to 1599 AD (a very simple fact) and yet like you too stupid to see or know astronomy they claim this 139 AD goes back 1460 years to 1322 BC which it doesnt, it is 1452 years back to 1314 BC July 18. And in only 716 years is back to 2030 BC July 17 instead of 720 or 740 years to 2034 /2054 BC. Nay they insist it is still July 20 and will claim 2062 BC and 2782 BC. Primitive crap totally false, and so you quote them huh? This is why Daniel says your days are cut short and you are put to death as insufficient, incompetent, lacking when it comes to astral truth writing on the wall. That hour is here and you and those like you are the Belshazzar so many of you once claimed didnt exist because you hate the bible. THERE IS MORE ASTRONOMY IN THE ANCIENT BIBLE than in the 26 absences of Venus during the 21 years of Amizaduga (1646-1625 BC; Adam's 2379-2400 AM). |
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