2619124 The world\'s first hydrogen balloon, launched over the Champs de Mars, Paris, France in 1783, from Les Merveilles de la Science, published c.1870 (engraving) by French School, (19th century); Private Collection; (add.info.: Piloted by Nicolas-Louis Robert (1760??820) and Professor Jacques Charles (November 12, 1746 ??April 7, 1823).); French, out of copyright.