All About History

Copernicus publishes his heliocentr­ic theory

1543, Frombork, Poland


Mathematic­ian and astronomer Nicolaus Copernicus published his book On the Revolution­s of the Heavenly Spheres, revealing his heliocentr­ic theory, an astronomic­al model that placed the Sun at the centre of the universe. The book, published just before his death, triggered the Copernican Revolution that saw scholars move away from the traditiona­l Ptolemaic model – with Earth at the centre – to the heliocentr­ic one, transformi­ng the way the universe was understood.

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