If Mars in his revolution around the sun were solely swayed by the attraction of the sun, he would, in accordance with the well-known laws of planetary motion, follow for ever the same elliptic path.
We thus enunciate the first law of planetary motion in the following words:-- Each planet revolves around the sun in an elliptic path, having the sun at one of the foci.
Such are the three celebrated laws of Planetary Motion, which have always been associated with the name of their discoverer.
Not only, however, is the first law true of planetary motion, it is equally true of the motions of all satellites moving round their primary planets.
We have learned in the previous articles that Kepler's Laws not only apply to planetary motion, but are equally applicable to the motion of all satellites as they revolve round their respective planets.
Pressure being obviously the cause of planetary motion, so is it of all terrestrial motion.
It is easy now to see how the Copernican system explains the main features of planetary motion, the stations and retrogressions, quite naturally and without any complexity.
He traced out from pre-existing observations the laws of planetary motion.
Kepler knew as much about the motion of the planets as Newton did; in fact, Kepler taught Newton and the world generally the facts of planetary motion.
Kepler had deduced, from a vast mass of observations, those general expressions of planetary motion known as 'Kepler's laws.
The satellite of Neptune was photographed at the Pulkown Observatory in the year 1899.
The photograph was taken in Jamaica, and a copy of it is given in Prof.
In the old Greek mythology Triton was a son of Neptune, so the name would be an appropriate one.
A non-mathematical exposition of the laws of planetary motion.
Two generations later came Kepler with his three famous laws of planetary motion: I.
Consequently, they obey the laws of planetary motion.
Kepler, though he discovered the laws of planetary motion, was unable to determine the motive force which guided and retained those bodies in their orbits.
He also made a vast number of observations on planets, which formed the basis of the 'Rudolphine Tables,' and were of invaluable assistance to Kepler in his investigation of the laws relating to planetary motion.
Had the orbit of Mars chanced to be as nearly circular as is that of Venus, Kepler might well have been driven to abandon his search for the true curve of planetary motion.
This is known as Kepler's first law of planetary motion.
Kepler was discovering the laws of planetary motion, while Galileo was laying the secure foundations of the new science of dynamics, in particular the laws of falling bodies, that was necessary before Kepler's laws could be fully understood.
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "planetary motion" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.
