By the 17th century, famed engineer and astronomer Galileo Galilei refined Copernicus' heliocentric model using observations made with telescopes he built himself. However, it was not until Kepler ...

DALLASIt's only when the big guns Copernicus, Galileo and Kepler came along that our understanding shifted to a heliocentric model with the sun at the centre of things and the Earth, and the other ...

This theory was known as the heliocentric model. It was controversial as accepted wisdom at the time (supported by the church) was that Earth was at the centre of the universe. Create your own ...