The Works of Galileo

Starry Messenger (1610)

Mountains on the Moon

Galileo demonstrated the existence of mountains on the Moon (Figure 1) . Some Aristotelian physicists taught that the shading of the Moon was internal, its surface as smooth as a marble.

Galileo inferred the existence of a lunar atmosphere from the fact that the mountains are not seen on the edge of the lunar disk.

Figure 1 Figure 1 - Return to Text

Galileo, 1610.

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Exhibit credit: Kerry Magruder, with the assistance of , Marilyn B. Ogilvie, Duane H. D. Roller.

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These teaching resources provided by the History of Science Department at the University of Oklahoma.

Unless otherwise indicated, all images courtesy History of Science Collections, University of Oklahoma Libraries. Image Terms of Use.

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