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Updated: May 3, 2025
Acad. des Sc., Paris; C. R., lxvii., 1868, p. 121. The Moon. Telescopic discoveries about the moon commence with Galileo's discovery that her surface has mountains and valleys, like the earth. He also found that, while she always turns the same face to us, there is periodically a slight twist to let us see a little round the eastern or western edge.
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