Hot air balloon - Wikipedia, the free encyclopedia

Hot air balloon - Wikipedia, the free encyclopedia

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日期:2026-04-22
The brothers Joseph-Michel and Jacques-Etienne Montgolfier developed a hot air balloon in Annonay, Ardeche, France, and demonstrated it publicly on September 19, 1783 with an unmanned flight lasting 10 minutes. After experimenting with unmanned balloons a...看更多