Page 492 - 89 history of astronomy_opt
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Galileo said that the mountains on the
moon showed greater differences of level than
˜
those on the earth. ShrAter supported this
opinion. W. Herschel opposed it. But Beer
˜
and MAdler measured the heights of lu-
nar mountains by their shadows, and found
four of them over 20,000 feet above the sur-
rounding plains.
Langrenus [1] was the first to do serious
492
