div class=trans-pagebuttonPage 1button div class=trans-image amp-img class=trans-thumb alt=Page 1: Pima County ArizonaStratospheric balloons are a low-cost way to get above 99% of the atmosphere: nearly as good as space NASA uses large balloons that drift at constant altitudes src=https:reader033fdocumentsusreader033viewer20220502025f55f8ef40d06b0703162fc1html5thumbnails1jpg width=142 height=106 layout=responsive amp-img divdivdiv class=trans-pagebuttonPage 2button div class=trans-image amp-img class=trans-thumb alt=Page 2: Pima County ArizonaStratospheric balloons are a low-cost way to get above 99% of the atmosphere: nearly as good as space NASA uses large balloons that drift at constant altitudes src=https:reader033fdocumentsusreader033viewer20220502025f55f8ef40d06b0703162fc1html5thumbnails2jpg width=142 height=106 layout=responsive amp-img divdivdiv class=trans-pagebuttonPage 3button div class=trans-image amp-img class=trans-thumb alt=Page 3: Pima County ArizonaStratospheric balloons are a low-cost way to get above 99% of the atmosphere: nearly as good as space NASA uses large balloons that drift at constant altitudes src=https:reader033fdocumentsusreader033viewer20220502025f55f8ef40d06b0703162fc1html5thumbnails3jpg width=142 height=106 layout=responsive amp-img divdivdiv class=trans-pagebuttonPage 4button div class=trans-image amp-img class=trans-thumb alt=Page 4: Pima County ArizonaStratospheric balloons are a low-cost way to get above 99% of the atmosphere: nearly as good as space NASA uses large balloons that drift at constant altitudes src=https:reader033fdocumentsusreader033viewer20220502025f55f8ef40d06b0703162fc1html5thumbnails4jpg width=142 height=106 layout=responsive amp-img divdivdiv class=trans-pagebuttonPage 5button div class=trans-image amp-img class=trans-thumb alt=Page 5: Pima County ArizonaStratospheric balloons are a low-cost way to get above 99% of the atmosphere: nearly as good as space NASA uses large balloons that drift at constant...