These pioneers set off because they knew the Earth was round, allowing them to go across one ocean and come back home the other way. 'They made the first orbit of Earth by sea,' said Dr Garvin ...

A look at the evidence for the Earth being round or spherical. Aristotle’s reasoning is explained. The evidence includes a ship’s hull disappearing first over the horizon, the stars ...

The terrific astronomical trio of Copernicus, Isaac Newton and Galileo explain how they each came to their universal scientific conclusions (including that the Earth goes round the Sun ...

This was a magical revelation for the Greeks and the Egyptians, who were able to see from the motions of the stars and the way the Sun ...