Balloon expert explains the challenges of shooting down China’s suspected spy balloon

Earlier this month, a suspected Chinese spy balloon drifted over much of the continental United States before an F-22 military fighter jet shot it down off the east coast. The event has put a massive strain on the already-fragile U.S.-China relations, with China maintaining that the errant balloon was simply collecting weather data. Shooting down the balloon, Beijing said, was an “overreaction.”
The incident has thrown an unexpected spotlight on stratospheric balloon technology. High-altitude balloons themselves are not new: in fact, there are upwards of thousands of balloons operating in the

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