Elementary astronomy; a beginner's text-book (1899)
Holden, Edward Singleton, 1846-1914 · New York, H. Holt and company · leaf 384
noted that the tail is not the debris of the cometleft behind the comet in its motion. The tail of a cometis behind the nucleus as the comet approaches the Sun, butit precedes the nucleus as the comet moves away from theSun. The vapors that arise from the nucleus, owing chieflyto the Suns heat, are…
Astronomy
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