Aiming to complement the discussion about the solar system, we present a mock-up made with low cost material which aims to offer the spacial view and the dynamics of the planetary motion to students. It consists in a mock-up of the Solar System in which the position of the planets can be varied in accordance with Kepler's laws. With this, we propose to make the dynamics of the heavenly bodies more comprehensive by exposing in a tactile way the relationship among their actual and apparent motions that are observed by astronomers when they study the sky with naked eyes. Combined with a discussion about Astronomy, starting from a historic context from the ancients up to nowadays, the use of the mock-up favors to comprehend the motives that led to errors and hits of the models of heavenly system proposed until the nowadays accepted one. For the mock-up building, all the necessary parameters are given in this article, such as the distances from the planets to the Sun and the mathematical tools for the calculus of the values in the scale of the mock-up.
Keywords:
Astronomy; Planets motion; Sky observation
