Heliocentriska
Heliocentriska is the Estonian term for heliocentrism, the astronomical model that places the Sun at the centre of the solar system. The concept was first proposed in antiquity by Aristarchus of Samos, who suggested that the Earth revolved around the Sun, but it remained a minority view until the Renaissance. In the sixteenth century, Nicolaus Copernicus published De revolutionibus orbium coelestium, which formally presented a heliocentric system and challenged the long‑standing geocentric view of Ptolemy. Copernicus’ model was later refined by astronomers such as Johannes Kepler, who derived the laws of planetary motion, and Galileo Galilei, who used telescopic observations to provide evidence for the model.
Heliocentrism replaced the geocentric model in scientific discourse and became a foundational concept in modern astronomy.