Heliocentrism: Definition, reason and model

Based on the principle of heliocentrism, today we know that Earth, as well as the other stars of the solar system, are everywhere around the sun. However, it is believed that the Earth is at the center of what is considered to be the universe, and that everything surrounds us – indeed. This is now known as the geocentric mode, whereas the heliocentric mode places the sun at its center.

Nicolaus Copernicus proposed a heliocentric approach in his work published in 1543, according to the NASA Earth Observatory. (opens on new page). While the sun’s focus is right on the center, the whole model is fraught with many flaws. Because the heliocentric method was first combined without a telescope, all observations had to be made with the naked eye and simple instruments. The positions of the stars have been widely predicted by looking at their position and magnitude relative to the stars, according to the book The Solar System. (opens on new page) (Jones & Bartlett Learning, 2010).

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