in addition to proposing that planetary orbits are elliptical, what other modification did kepler make to…

in addition to proposing that planetary orbits are elliptical, what other modification did kepler make to copernicuss model?\nplanets closer to the sun move faster.\nplanets spin in an epicycle while orbiting earth.\nvenus has phases due to its orbiting of the sun.\nearths rotation causes the rising and setting of the sun.

in addition to proposing that planetary orbits are elliptical, what other modification did kepler make to copernicuss model?\nplanets closer to the sun move faster.\nplanets spin in an epicycle while orbiting earth.\nvenus has phases due to its orbiting of the sun.\nearths rotation causes the rising and setting of the sun.

Answer

Brief Explanations:

Kepler's second - law (law of equal areas) states that a line segment joining a planet and the Sun sweeps out equal areas during equal intervals of time. This implies that planets closer to the Sun move faster. Copernicus proposed a heliocentric model but did not have this speed - distance relationship. The other options are either incorrect (planets spin in an epicycle while orbiting Earth is a Ptolemaic idea), or not a modification by Kepler to Copernicus's model (Venus has phases due to its orbiting of the Sun was known before Kepler and Earth's rotation causing the rising and setting of the Sun is not a modification to Copernicus's model by Kepler).

Answer:

Planets closer to the Sun move faster.