Mattison, Hiram, 1811-1868 · New York, Huntington and Savage, Mason and Law · leaf 150
and planets are almost infinitely disproportionate. 2. The fact that they revolve about the Sun, is a sufficient proof of their being sub-ject to the great law of gravitation.] andto 690. What is known of thePeriodic Times of Comets ?Only four or five havebeen ascertained;these vary from ! _570… … 144 PRIMAEY ASTRONOMY. 691. Are all Comets supposed to revolve continually around theSun? Professor Mchol and Sir John Herschel are of opin-ion that the greater number visit our system but once,and then fly off in nearly straight lines, till they passthe center of attraction between the Solar…
Astronomy
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