Sharpless, Isaac, 1848-1920, Philips, G. M. (George Morris), 1851-1920, joint author · Philadelphia, J.B. Lippincott company · leaf 205
nd one-half years. Then, countingback, he found many records of its previous discov-ery. It has been watched several times since. This comet is of special interest to astronomersfrom the fact that its time of revolution is not uni-form. It arrives at its perihelion about two and one-half hours… … odic time has diminished two days since it was firstdiscovered. This indicates that it must be continuallyapproaching the sun, as a small orbit and short periodictime always go together. The only plausible explana-tion of this fact is that thecomet, being very light, is re-sisted in its motion by…
Astronomy
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