How did Johannes Kepler's astronomical discovery differ from the theories of Aristotle and Copernicus. He contradicted their theories regarding the moon's phases. He stated that the planetary orbits were elliptical. He promoted the finding that the earth-sun distance remains constant. He stated that the planetary orbits were circular.

Question

How did Johannes Kepler's astronomical discovery differ from the theories of Aristotle and Copernicus. He contradicted their theories regarding the moon's phases. He stated that the planetary orbits were elliptical. He promoted the finding that the earth-sun distance remains constant. He stated that the planetary orbits were circular.

Answer 1

He stated that the planetary orbits were elliptical.

Answer 2

Aristotle and Copernicus both supported the idea of circular orbits for celestial bodies. Aristotle viewed the heavens as perfect and unchanging, with circular motion being the only "perfect" form. Copernicus, while challenging the geocentric model, still used circular orbits in his heliocentric theory. Kepler, through detailed observation and analysis of Tycho Brahe's data, proposed that planetary orbits are elliptical rather than circular. This idea marked a significant departure from previous astronomical models and provided a more accurate framework for describing planetary motion.

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