Apr 14, 2020 · Come along for the first Hot-Air Balloon ride! Learn how brothers Joseph and Etienne Montgolfier ... Duration: 10:57 Posted: Apr 14, 2020
Dec 22, 2023 · A hot-air balloon is a balloon that uses hot air to generate buoyancy. The brothers initially tried to ... Duration: 1:32 Posted: Dec 22, 2023