Flammarion, Camille, 1842-1925, Lockyer, Winifred James, Mrs., d. 1879 · New York, C. Scribner & co. · leaf 180
descend into Europe or some otherterrestrial quarter. Indeed, the planet Mars in our tele-scopes presents the same aspect as the Earth must do tothe inhabitants of Venus ; a circular disk, rather flattened,turning on itself in about twenty-four hours, furrowed fromtime to time by fleeting clouds,… … Fig. 31. Mars. our own, but their duration is twice as long; for Mars onlyaccomplishes its annual revolution round the Sun in 1 year,321 days, and 22 hours, or 1 year, 10 months, and 21 days.The masses of ice we see at its poles partly melt in thespring of each hemisphere, and again form in the…
Astronomy
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