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aka-chmeee

(1,189 posts)
4. At high school where I work as tech assistant, we intentionally release
Thu Nov 28, 2019, 05:37 PM
Nov 2019

one, sometimes two high altitude balloons a year.

We've been using Hydrogen gas for several years (costs about 20% of Helium). We track the balloons and retrieve them when they return to earth. We have traveled as far as 200 miles to recover our (latex) balloons and instrument packages.

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