Don't panic if you see balloons hovering during America's two upcoming solar eclipses

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Don't panic if you see balloons hovering during America's two upcoming solar eclipses
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It's probably just the National Eclipse Ballooning Project (NEBP) livestreaming and doing science above 99.5% of the atmosphere.

, according to the National Weather Service. They're caused by air being vertically displaced — typically by a mountain or a thunderstorm updraft — and they create a rippled pattern in high clouds, if there are any. at a total solar eclipse in Chile in 2019

Even if there are no clouds — so no visual evidence — from the data on temperature, pressure, wind direction and wind speed it will be possible to to deduce the pressure waves and where the gravity waves were. The way a helium-filled neoprene weather balloon works is pretty simple."It goes up and as the pressure decreases the pressure inside the balloon increases, it expands, it pops and then it comes back down," says Des Jardins. The payload floats back down by parachute.

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