In the skies over North America, a total of four flying objects have been shot down by US fighter jets in recent days: In addition to China’s huge 60-meter spy balloon, which was discovered early this month and shot down a few days later, three smaller flying objects in the US and Canada. It is still unclear who they come from. But the origins of the technology are ancient.
The first hot air balloon is believed to have lifted off in China in the 2nd century AD, when General Zhuge Liang used a small candle-powered balloon as a signal to his troops. The course for its use as espionage technology was set in 18th-century France: in the 1780s, the Montgolfier brothers caught the king’s attention with hot-air balloon experiments, at whose behest other researchers also began experimenting. Only a decade later, in 1794, the French army used the first spy balloon – against Austria.
Source: Krone
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