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doit_the_clown doit_the_clown
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7 years ago
A major contribution of Johannes Kepler to the development of modern astronomy was to
A)   develop the first mathematical heliocentric model of the solar system.
B)   prove that planetary orbits are ellipses.
C)   use parallax to prove that the Earth moves around the Sun.
D)   observe the satellites (moons) of Jupiter.
Textbook 
Discovering the Universe

Discovering the Universe


Edition: 7th
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Only two things are infinite, the universe and human stupidity, and I'm not sure about the former.

Albert Einstein
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hyponoticahyponotica
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7 years ago
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