A high-school astronomy: in which the descriptive, physical, and practical are combined .. (1853)
Mattison, Hiram, 1811-1868 · New York, F. J. Huntingdon [etc.] · leaf 141
ion to aphelionthey precede their nuclei or heads ; or, in other words,comets seem, after having passed their perihelion, to JklcUout of the solar system. Their tails are usually curcedmore or less, being concave toward the region fromwhence they come. This is well shown in the comets of1811, 1843,… … 293. Parts of a comet \ Describe each. Have all comets these three parts (What comet shown as a sample in the c 204. Direction of the tails of comets ? How curved ?vat lire ? so of this cur- 138 ASTRONOMY space, and offers a slight resistance to their progress. Ofcourse it must be almost infinitely…
Astronomy
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