Who first proposed the concept of elliptical orbits?a.Galileob.Copernicusc.Keplerd.Hubblee.All of the abovef.None of the above
Question
Who first proposed the concept of elliptical orbits?
a. Galileob
b. Copernicus
c. Keplerc
d. Hubble
e. All of the above
f. None of the above
Solution
The concept of elliptical orbits was first proposed by Johannes Kepler, particularly through his work known as Kepler's First Law of Planetary Motion. This law states that planets move in elliptical orbits with the Sun at one focus. While Galileo and Copernicus made significant contributions to the understanding of the solar system—Galileo through his telescopic discoveries and Copernicus through the heliocentric model—it was Kepler who mathematically described the nature of planetary motion as elliptical, challenging previous circular orbit theories. Edwin Hubble, on the other hand, was primarily involved in the study of galaxies and the expanding universe, unrelated to the concept of planetary orbits.
Final Answer
c. Kepler
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