* Astronomy

The Waldseemuller map of 1507.

The Waldseemuller map was - and still is - an astonishing sight to behold. Drawn 15 years after Columbus first sailed across the Atlantic, and measuring a remarkable 8ft wide by 4½ft high, it introduced Europeans to a fundamentally new understanding of the make-up of the earth.

The name America, for example, very probably represents not just a tip of the hat to Amerigo Vespucci but also a multilingual pun that can mean both "born new" and "no-place-land" - a playful coinage that seems to have inspired Sir Thomas More to invent his new world across the ocean, one meaning of which was also "no-place": Utopia.

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