Side-lights on astronomy and kindred fields of popular science; essays and addresses (1906)
Newcomb, Simon, 1835-1909 · New York Harper · leaf 118
nd had it not been that Professor Hall wasengaged in observations upon the satellites, it wouldnot have been seen then. A similar spot on the planetwas recorded in 1902, and much more extensivelynoticed. On this occasion the spot appeared in ahigher latitude from the planets equator than… … THE GREAT REFRACTOR OF THE NATIONAL OBSERVATORY AT WASHINGTON MAKING AND USING A TELESCOPE of Jupiter. Notwithstanding their transient charac-ter, these two spots have afforded the only determi-nation of the time of revolution of Saturn which hasbeen made since Herschel the elder. Of the satellites…
Astronomy
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