s because.....
a) the Copernican system used the old value for the radius of Earth
b)Copernicus had been unstable to detect parallax
c)the Coperican system included uniform circular motion
d)in the Copernican system only Mercury and Venus orbit the sun, all other planets orbited Earth
e)Copernicus used inaccurate data from Ptolemy's system
I have a mid-term Friday, having issues with this question! THANKS!
2006-10-11 05:44:49 · 5 answers · asked by Sarah 3 in Science & Mathematics ➔ Astronomy & Space
C. Copernicus thought that the planets had circular orbits. This was later disproved by Johannes Kepler, who showed that the planetary orbits were actually elliptical through his laws of planetary motion.
2006-10-11 05:46:06 · answer #1 · answered by Anonymous · 5⤊ 0⤋
... because it was a pure mathematical / geometric model, and did not attempt to find the causes for the observations of the positions. It kept the notions of epicycles and uniform circular motion. However, it was simpler than the Ptolemaic system for about the same error level.
2016-03-28 05:04:10 · answer #2 · answered by Anonymous · 0⤊ 0⤋
c) the Copernican system included uniform circular motion
It was Kepler who later greatly improved the accuracy of the Copernican system by showing that the planets moved at variable speed on elliptical orbits.
2006-10-11 06:01:42 · answer #3 · answered by campbelp2002 7 · 2⤊ 0⤋
The problem with Copernicus was that he believed in a perfect system. To him, that meant that orbits had to be circular. His impression was that if God had created the heavens then they must be perfect in all ways. To Copernicus, circular motion was orbital perfection.
2006-10-11 05:51:43 · answer #4 · answered by dobiepg 3 · 4⤊ 0⤋
This could be considered cheating
2006-10-11 06:23:05 · answer #5 · answered by Anonymous · 1⤊ 2⤋