Auguste Piccard was much more than a balloonist.
(Yes, we realize, this is the second balloonist we're profiling in a matter of days. Let it be.)
Piccard was a physics professor whose work on cosmic radiation supported Einstein. He was an inventor who created a gondola from pressurized aluminum. Aboard that gondola, Piccard was the first to balloon into the stratosphere. He also invented the bathyscaphe, a free-diving, man-holding device. (Jacques Cousteau was a fan.) Piccard's son was the first to descend into the Mariana Trench, doing so inside his father's invention.
Piccard was also the model for Professor Calculus (Tournesol in the original), the absent-minded friend and mentor of Tintin in the famed comic series.
Alas, he wasn't Jewish. Yes, there was an article published during Piccard's lifetime that claimed he had Jewish ancestry, but it looks to have been mistaken. We'll let it be.