Below you can find the It's the last name of swiss-born twins auguste & jean who were known for their balloon experiments Jeopardy Words Answer. The answer to It's the last name of swiss-born twins auguste & jean who were known for their balloon experiments has 7 letters. This clue belongs to the Twins category and is part of Jeopardy Word Level 2496. If you scroll near the bottom you will find other clues and answers part of level 2496