The heavens above: a popular handbook of astronomy (1882)
Gillet, J. A. (Joseph Anthony), 1837-1908 · New York, Chicago, Potter, Ainsworth, & Co. · leaf 305
2/8 ASTRONOMY. As the comet approaches the sun, bright vaporous jets,two or three in number, are emitted from the nucleus onthe side of the sun and in the direction of the sun. Thesejets, though directed towards the sun, are soon more or lesscarried backward, as if repelled by the sun. Fig.… … Fig. 312. The jets in this case seemed to have an oscillatory motion.At I and 2 they seemed to be attracted towards the sun,and in 3 to be repelled by him. In 4 and 5 they seemedto be again attracted, and in 6 to be repelled, but in areverse direction to that in 3. In 7 they appeared to beagain…
Astronomy
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