Astronomy: Galileo, after using the telescope on the bell-tower of St Mark's Square, Venice, demonstrates his findings to the Doge, 1609. Engraving by J. P. Le Bas after himself, 1739.

Licence: Public Domain Mark

Credit: Astronomy: Galileo, after using the telescope on the bell-tower of St Mark's Square, Venice, demonstrates his findings to the Doge, 1609. Engraving by J. P. Le Bas after himself, 1739. Wellcome Collection. Source: Wellcome Collection.