hold this theory and those who say that comets are a coalescence of the planets is,Kort Norge Salg, first, the fact that some of the fixed stars too get a tail. For this we must not only accept the authority of the Egyptians who assert it, but we have ourselves observed the fact. For a star in the thigh of the Dog had a tail,Malaga Pas Cher, though a faint one. If you fixed your sight on it its light was dim,Belstaff Let Bomber Jackor, but if you just glanced at it, it appeared brighter. Besides,Maillot Costa Pas Cher, all the comets that have been seen in our day have vanished without setting,Chaussures Superstar 1, gradually fading away above the horizon; and they have not left behind them either one or more stars. For instance the great comet we mentioned before appeared to the west in winter in frosty weather when the sky was clear,Ralph Lauren Tee, in the archonship of Asteius. On the first day it set before the sun and was then not seen. On the next day it was seen, being ever so little behind the sun and immediately setting. But its light extended over a third part of the sky like a leap, so that people called it a ‘path’. This comet receded as far as Orion’s belt and there dissolved. Democritus however, insists upon the truth of his view and affirms that certain stars have been seen when comets dissolve. But on his theory this ought not to occur occasionally but always. Besides, the Egyptians affirm that conjunctions of the planets with one another,Dame Moncler Yaroy Norge Salg, and with the fixed stars, take place, and we have ourselves observed Jupiter coinciding with one of the stars in the Twins and hiding it, and yet no comet was formed. Further,Menn Moncler Berriat Norge Salg, we can also give a rational proof of our point. It is true that some stars seem to be bigger than others,Nike Kobe 10 Męskie, yet each one by itself looks indivisible. Consequently, just as, if they really had been indivisible, their conjunction could not have created any greater magnitude, so now that they are not in fact indivisible but look as if they were, their conjunction will not make them look any bigger.
Enough has been said,Chaussures New Balance 680, without further argument, to show that the causes brought forward to explain comets are false.
7
We consider a satisfactory explanation of phenomena inaccessible to observation to have been given when our account of them is free from impossibilities. The observations before us suggest the following account of the phenomena we are now considering. We know that the dry and warm exhalation is the outermost part of the terrestrial world which falls below the circular motion. It,Ralph Lauren Kvinnor, and a great part of the air that is continuous with it below, is carried round the earth by the motion of the circular revolution. In the course of this motion it often ignites wherever it may happen to be of the right consistency, and this we maintain to be the cause of the ‘shooting’ of scattered ‘stars’. We may say, then, that a comet is formed when the upper motion introduces into a gathering of this kind a fiery principle not of such excessive strength as to burn up much of the material quickly, nor so weak as soon to be extinguished,Chaussures Nike Air Max 2015 Homme, but stronger and capable of burning up much material, and when exhalati
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