Collins, A. Frederick (Archie Frederick), 1869- · New York, London, D. Appleton and company · leaf 135
Fig. 129.—An Ellipse, Para-bola and Hyperbola. ai4 THE BOOK OF THE STARS the planets and Sun, but shoot in and out of our solar systemfrom and to every direction; and fifth and last, they travel atenormously high speeds. Now, a comet, however great it may grow to be, never burstsinto view, big,… … •.■v***,^ *^* ^ \ / Fig. 130.—Head and Tail of Comet Do Not Obey£the Same Laws. likely be mistaken for a nebula, if it did not move along soswiftly. A comet can be told by its movement and its movement canbe plotted in the same way I have described for plotting the posi-tion of a planet in Chapter…
Astronomy · Stars
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