Submitted by Uncle_Leo93 t3_114w81r in nottheonion
wascilly_wabbit t1_j8yl4zg wrote
Reply to comment by rexspook in Object downed by US missile may have been amateur hobbyists’ $12 balloon by Uncle_Leo93
> Pico balloons are typically about 3 ft. in diameter on the ground before they are launched. As they ascend to altitudes of 20,000-50,000 ft., the super-pressure balloon envelope expands by about 2-3 times in size and achieves neutral buoyancy, allowing them to float at a roughly consistent altitude
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