Familiar lessons on astronomy ; designed for the use of children and youth .. (1848)
Fowler, Lydia F. (Lydia Folger), 1823-1879 · New York, Fowlers & Wells · leaf 80
he surface of Mars diversified ?5. How can Mars be distinguished from the other planets ? What is thecause of its ruddy appearance 1 70 MARS. by the fact that when any star approaches the planet,its light diminishes, and sometimes it disappears ; yetothers suppose that there is no sufficient… … TELESCOPIC APPEARANCE OF MAKS. 7. There is a great variety in its seasons. Thereare white spots around the poles, which Dr. Herschelthinks are indications of snow and ice. These alter-nately appear and disappear, according to the situationof the planet with respect to the sun ; which wouldfavor the…
Astronomy
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