View Single Post
  #6  
Old September 14th 17, 06:35 PM posted to sci.astro.amateur
Gerald Kelleher
external usenet poster
 
Posts: 1,551
Default Theory explained in 3 parts

The 'universal theory of gravity' is a byword for many things including the assumption that experimental sciences scale up to orbital dynamics -

"Lastly, if it universally appears, by experiments and astronomical observations, that all bodies about the earth gravitate towards the earth, and that in proportion to the quantity of matter which they severally contain, that the moon likewise, according to the quantity or its matter, gravitates towards the earth, that, on the other hand, our sea gravitates towards the moon, and all the planets mutually one towards another, and the comets in like manner towards the sun, we must, in consequence or this rule, universally allow that all bodies whatsoever are endowed with a principle of mutual gravitation. ." Newton

That assertion sits on its own without any relevance to astronomical methods and insights that preceded it even though an attempt was made to make it appear that he was following astronomical discipline.

This is an entirely different thread than any other insofar as any objectors cannot rely on engineering propaganda but must detail exactly, using Newton's own descriptions how the mutual attraction of the apple and the Earth is brought into the realm of astronomical observations, methods and insights and specifically that the planets demonstrate variable orbital speed as they orbit the Sun.