Are there really epicycles in the present solar system?
Everything related to space, we have yet to learn, and this is cool, but I think that the main achievement is that people were able to start using solar energy for their own benefit, I see that many are now putting solar panels directly on their homes, I know that many are collaborating with PPM Solar, where on their website https://ppm.solar/ you can find complete information on how everything works and how it will change your electricity bills and life for the planet as a whole.
No. Epicycles were originally used by Ptolemy to explain the retrograde motions of the planets in an Earth-centred solar system. Later, Copernicus reasoned that retrograde motion could be the result of Earth ‘catching up’ with the planets as it moves around the Sun in a faster orbit, but he still needed epicycles to explain the apparent motions because he was fixated on the idea of using circles, and a simple circular orbit did not fit with observation. Kepler discovered that using elipses instead of circles explained the observed motions of the planets nicely without the need for epicycles.
