Sketch the major contributions of Galileo and Kepler to the development of our u

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Sketch the major contributions of Galileo and Kepler to the development of our understanding of the solar system. With the publication of the Copernican model of the solar system, scholars began to take the heliocentric theory more seriously. However, it was the work of Galileo and Kepler that paved the way for the widespread acceptance of the heliocentric model. As a result of Galileo's observational evidence and Kepler's theoretical innovations, the geocentric model was ultimately rejected. Johannes Kepler used decades of Tycho Brahe's observational data to formulate an accurate description of planetary motion. Kepler spent almost 30 years of his life trying to develop a simple description of planetary motion based on a heliocentric model that fit Tycho's data. What conclusion did Kepler eventually come to that revolutionized the heliocentric model of the solar system? Kepler confirmed that Venus orbits the Sun. Kepler confirmed that the planetary orbits are circular. Kepler determined that the planetary orbits are elliptical. Kepler explained retrograde motion. Astronomers have made many observations since the days of Galileo and Kepler to confirm that the Sun really is at the center of the solar system, and that the planets revolve around the Sun in elliptical orbits. Which observation(s) could you make today that Galileo and Kepler could not have made to confirm that the heliocentric model is correct? Check all that apply. Transit of an extrasolar planet Stellar parallax in nearby stars Doppler shifts in stellar spectra of nearby stars Orbital periods of Jupiter's moons

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c b, c

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