Lectures on astronomical theories . TV S SOLAR AND PLANETARY ORBIT. 17 true, the planet is itself in motion revolving around thesun; but this will only modify the orbital path of thecomet in such wise , on the one hand, the motionof the comet is in the same direction as that of theplanet, it will have to overtake the motion of the planetbefore leaving its solar orbit, which will thus be, in thefirst place, increased; but, since the distance after leavingthe planet and returning, will be so much less, the entireorbit, measuring from a definite (fixed) point will be thesame; or on the o
Lectures on astronomical theories . TV S SOLAR AND PLANETARY ORBIT. 17 true, the planet is itself in motion revolving around thesun; but this will only modify the orbital path of thecomet in such wise , on the one hand, the motionof the comet is in the same direction as that of theplanet, it will have to overtake the motion of the planetbefore leaving its solar orbit, which will thus be, in thefirst place, increased; but, since the distance after leavingthe planet and returning, will be so much less, the entireorbit, measuring from a definite (fixed) point will be thesame; or on the other hand, if the orbital motion of thecomet be supposed in the reverse direction to that ofthe planet, then the motion of the planet will become,in the first place, a deduction from the solar orbit of thecomet jbecause the planet will then (so to speak) meet thecomet, but this will again be compensated by the greaterdistance which the comet has to travel after leavinsr theplanet. In this last case, where the motions are in thereve
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Keywords: ., bookcentury18, bookdecade1870, booksubjectastronomy, bookyear1876
