Space Perspective recently reached a significant milestone by testing its prototype, Spaceship Neptune, which is based on an innovative concept: a space balloon. This stratospheric hydrogen-filled ...

At another memorable entertainment staged by the duc de Crillon, Franklin witnessed the launch of a hydrogen balloon some five feet in diameter that kept a lantern aloft for over eleven hours. The ...

Franklin emptied the membrane of hydrogen and forwarded it to Richard Price so that he and Sir Joseph Banks might repeat the experiment. The delightful little toy was thus not only the first balloon ...