What is the topic of this text?
a. The laws of planetary motion.
b. The life and work of Johannes Kepler and Tycho Brahe.
c. The history of astro...
What is the topic of this text?
a. The laws of planetary motion. b. The life and work of Johannes Kepler and Tycho Brahe. c. The history of astronomy and astrophysics. d. The properties of the planets in our solar system. e. The law of universal gravitation.
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