Mitton, G. E. (Geraldine Edith) · London, A. and C. Black · leaf 80
e earth, this means that he moves roundmore slowly. His axis is tilted at nearly the sameangle as ours is. Mars is much smaller than theearth, his diameter is about twice that of themoon, and his density is about three-quartersthat of the earth, so that altogether, with hissmaller size and less… … FOUR SMALL WORLDS 57 could jump enormous distances with little effort,and skip and hop as if you were on springs. Look at the map of Mars, in which thesurface appears to be cut up into land andwater, continents and oceans. The men who firstobserved Mars with accuracy saw that some partswere of a…
Astronomy
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