An 18.8 million-cubic-foot super-pressure balloon flown remotely by NASA has successfully completed a midlatitude circumnavigation of the Earth, NASA said today. The balloon, carrying a Compton spectrometer and imager payload, achieved the milestone 14 days, 13 hours, and 17 minutes after launching from Wanaka Airport, New Zealand, on Tuesday, May 17. At the moment the balloon crossed the meridian, it was flying at an altitude of 110,170 feet and heading northeast at 53.85 knots.
Source: avwebNASA Balloon Succeeds In Flight Test