![Copernican's Sun-centred model of the universe.](http://static.sciencelearn.org.nz/images/images/000/000/275/full/Copernican_model_UpdatedAug2022_SLH-UoW.png?1674164016)
Over time, Ptolemy’s model was developed into a complex and cumbersome mathematical system. Copernicus was able to simplify it by switching from an Earth-centred model to a Sun-centred one.
Over time, Ptolemy’s model was developed into a complex and cumbersome mathematical system. Copernicus was able to simplify it by switching from an Earth-centred model to a Sun-centred one.