Johannes Kepler

"Nothing which consists of corporeal matter is absolutely light, but that is comparatively lighter which is rarer, either by its own nature, or by accidental heat. And it is not to be thought that light bodies are escaping to the surface of the universe while they are carried upwards, or that they are not attracted by the earth. They are attracted, but in a less degree, and so are driven outwards by the heavy bodies; which being done, they stop, and are kept by the earth in their own place."

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Source: Kepler by Walter William Bryant, (p. 36), 1920.

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Johannes Kepler

Johannes Kepler

Astronomer, Mathematician

Johannes Kepler was a key figure in the scientific revolution, known for formulating the laws of planetary motion and his work 'Astronomia Nova'.

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