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There are thousands of weather balloon starts every day without any damages to airplanes.

It's not factor as long they are not crossing a specific size/weight - jet engines and windows from airplanes are tested to withstand a direct impact.

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Yeah, and pico baloons are extremely tiny, often at 10 grams or less, comprising some very thin plastic, some thin wire and tiny PCBs - this is also how they can fly so high for so long.

Lost of types of hail will be much heavier and harder on impact for example.

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It also reminds me of the recent incident where an object (potentially a weather balloon) struck a plane windscreen and caused significant damage to it, as well as injuring one of the flight crew. I don't know if it would cause the same amount of damage given it's size, but hitting any solid object at cruising speed is sure to leave a mark
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shouldnt be cruising in the balloon lane then
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Balloon doesn't teleport to the balloon lane though
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That was a much larger balloon that had sand ballast. The sand was what did the damage
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