Answer: Johannes Kepler challenged the traditional belief that, the orbits of the planets were spherical, showing that the five known planets moved around the sun in elliptical paths.
Explanation: To find the correct explanation, we have to know more about the History of planetary motion and the Kepler's laws.
What is the history of planetary motion?
- In B.C 350, Aristotle-Universe was composed of 55 concentric rotating sphere, centered in Earth.
- Aristarchus- Sun and stars were fixed, and the planets rotated about the sun.
- Ptolemy-Planets moves around the earth, in small circle.
- Copernicus-Retrograde motion of planets as observed from earth.
- Galileo-Motion of moons orbiting Jupiter.
- Kepler- Planet moves in an elliptical orbit.
What is Kepler's law of planetary motion?
- First law: Planet moves in an elliptical orbit with sun as one of the foci.
- 2nd law: Planets sweeps equal area in equal interval of time.
- 3rd law: The square of the time period of motion is proportional to the cube of its mean radius.
Thus, from the above explanation we can conclude that, Johannes Kepler challenged the traditional belief that, the orbits of the planets were spherical, showing that the five known planets moved around the sun in elliptical paths.
Learn more about Kepler's laws of planetary motion here: https://brainly.com/question/28019889
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