Sharpless, Isaac, 1848-1920, Philips, G. M. (George Morris), 1851-1920, joint author · Philadelphia, J.B. Lippincott company · leaf 201
the sun it goes through its changesin reverse order, apparently drawing in its tail, and,finally, its envelopes, and returning to its condition ofuninteresting uniformity. It has its brief day of lightand activity, to be followed by a long night of dark-ness and rest. 1 Points farthest from the… … Fig. 48.—Comet of 1861. partly gaseous. The nucleus is probably solid, andshines by reflecting the light from the sun. The comaand tail are gaseous, the former giving out light of its COMETS AND METEORS. 197 own. This light is due largely to glowing carbonvapor, and resembles somewhat the flame of…
Astronomy
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