do they reach a time and burst or do they keep floating in spacedo they reach a time and burst or do they keep floating in space?
In: 1
>The balloon is usually filled with hydrogen… Weather balloons may reach altitudes of 40 km (25 mi) or more, limited by diminishing pressures causing the balloon to expand to such a degree (typically by a 100:1 factor) that it disintegrates.
https://en.wikipedia.org/wiki/Weather_balloon
Just call me Google.
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